I'm going on a trip. Looking for thoughts/suggestions

So I am going on a trip in a couple of weeks for my 40th birthday and the wife just told me where. It has been a surprise for months, but she said she wanted to give me some chance to prepare.

I will be going to Albuquerque, New Mexico for a week. I don't know what we'll do much of the time, but the trip is culminating with a balloon ride for me on the first day of the Albuquerque Balloon Fiesta. I will be there at dawn and riding for a few hours in one of the couple hundred or more hot air balloons participating in the first Mass Ascension. Needless to say I am very excited.

Anyhow, I am looking for any suggestions anyone might have for what to take or anything else helpful. I am on a tight budget and will rent one extra lens...

I own a Samsung GX-10 (nee K10D) and I recently bought a Sigma 10-20mm. I also own the 18-55 kit lens, a horrible Takumar 135 f2.5 which I am not taking (if there is a color it can fringe with massively, it will), and a cheap Pentax M 50mm f2. I am planning on renting one nice lens to take with me, a DA* 60-250 f4 . I can't afford to rent more, but this one should hopefully cover most needs that the kit and the Sigma can't. I have always wanted to try a DA* anyhow. Might own one someday...

I think I should also bring/buy a monopod for the dawn photos, and the nighttime balloon glow we will probably go take the kids to at the end of the day. I will likely get another spare battery since I only have 2 and the original battery is showing its age. Just bought an 8GB SD card, but knowing me I might want another...

Any thoughts? Anyone else going? Anything is greatly appreciated. Thanks in advance!

--
John
http://www.flickr.com/photos/quantumjedi
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'If the doors of perception were cleansed, everything would appear to man as it is, infinite.'
-- William Blake