If you've weighed all of the factors for yourself and are sure what each of the various features and characteristics will mean to you, then I won't dissuade you from the 350D. However, if you are merely acting upon anecdotal recommendations, I'd be very sure to know why I haven't chosen the most current offering in its class, the 400D.
Regarding lenses, those who counsel a deliberate, measured, approach are absolutely correct. However, there is a generalist path of "first lenses" which you can follow with reasonable assurance of receiving great benefit and minimal risk. This all begins with your general use lens, the proverbial "walkaround", the lens which will reside upon your body for "grab and go" use for the predominate amount of your shooting.
You've several choices for a walkaround lens, but I'd absolutely advise you that any walkaround lens you choose should absolutely include IS (image stabilization). No other single feature will benefit your outcomes more than image stabilization, period; and unless your budget prohibits you from affording one, buying any walkaround lens that is absent stabilization is the largest disservice you can do for yourself. You have four to choose from, the 17-85, 17-55, 24-105, and 28-300 (in order of cost), though despite being the least expensive and most modest performer of the four, the 17-85 has an exceptionally useful range with the cropped sensor and I've found it to be a very, very, good lens indeed, and an even-better value.
From there, you should also choose one fast prime (fixed focal length) lens. For most, this is the 50 f/1.8 or 50 f/1.4. The f/1.8 is the best value in photography, but the 50 f/1.4 is most certainly a positive step up and what I would recommend. This is your low-light, creative, and portrait tactical weapon. Filling these first two slots are essentail for all but the rarest of photographers.
The next slot filled is typically the telephoto zoom. Though the 75-300 IS was a dog, the 70-300 IS is absolutely not, and it rivals L-series lenses in quality and performance in virtually every sense. It is by far one of the best quality/value/usefulness propositions in the EF lineup, and with the benefit of image stabilization, it's a dream to own. The 70-200 f/4 L has been a longtime favorite of some, and while it's suberb, it lacks stabilization and 100mm of reach, both of which provide a far greater boost to the quality of your outcomes than any differences in optical properties or quality. This is "no brainer" lens number 1, and slot number 3 which all but the rarest exceptions fill next.
The fourth lens is an ultra-wide zoom. Because the DXXX series uses a cropped sensor, all lenses behave longer than they are (or would on a standard 35mm film camera) by a focal length factor of 1.6. This means standard lenses effectively become telephotos. Telephotos become SUPER telephotos, and ultra-wide lenses become mere wide or standard lenses. This has led to a series of new lenses designed to "give back" these ultra-wide views which are sometimes necessary to recover the wide fields of regard lost to the cropped sensor size. The best in classs is the EF-S 10-22. Tamron, Tokina, and Sigma all make various alternatives, some are 10-20, others 12-24, and just about everything in-between, but I've yet to see any lens that outpaces the EF-S 10-22 in this class. Unfortunately, there's no stabilized option, but fortunately, IS means slightly less at this wide angle of view.
A fifth member of the "first lens" lineup is usually a Macro lens, or a lens designed to have very high magnification potential (usually considered to be a 1:1 ratio) and corner-to-corner distortion correction, and these are the lenses used to shoot bugs and such. These can also be used as regular prime lenses, and many find their macro primes pull double-duty as portrait lenses.
Some never need a Macro. For others, this is the first kind of shooting they want to do. For some, it's the only reason they own a camera. However, for most, it is a specialized type of shooting that they like to be able to do when the situation arises, and not being able to do so is something they simply don't want to do. Plus, given the inherent sharpness of Macro lenses (more than any other), there are very practical reasons to have one as a tactical weapon when sharpness is the ultimate defining factor. As a result, some substitute this for their standard prime. Others expand the "essentail" group of four lenses to five to include a Macro, either immediately, or down the line. Others make use of their other lenses (and tools like extension tubes) to give them Macro capabilities and never view owning one as a fundamental need whatsoever.
In conclusion, following this roadmap, and crafting it for your own needs will give you a very useful "growth path" to follow that will provide you with tools that will leave you well-prepared for virtually any scenario without breaking the bank. Aside from your walkaround and prime, you can also omit or reprioritize any of the other options to meet your specific needs, all without having to worry whether or not you're going to overlap, have to rebuy in the immediate future, or spend the same dollars twice.
From there, it's a matter of expanding, enhancing, or substituting to meet the specific demands of the kind of shooting you find yourself doing or liking most. You may not even replace your first lenses, choosing to keep them as alternatives to heavier high-performance lenses down the line when you don't need every ounce of performance and would greatly benefit from greater portability and compactness.
I hope this helps you at least begin to draft a personal plan while spurring some topics for thought to help you buy the best tools to suit your needs (and avoid buying the ones that won't).
E.