Need some thoughts about getting the xt2 or the xt3

Hi guys, sorry for my English, I'm too lazy to check with Google trad, I'm interested about your advices.

Some background first : I have interest about photography since few years, I really started one year ago when I got my first dslr (old 450d), since then  I fell in love of photography and I plan to became a wedding/events photograper in the future. I currently use a x100t for street/everyday photos, which I really like (ill maybe sell it to fund a lens, I still don't know)

In January I'll probably buy a new camera. I'll probably have 1.5€  budget. Here in France we can find used xt2 (I won't buy a brand new xt2) for 800/850, so I'll have enough money to buy a used 16mm/56 or 2 standard f2 prime (like the 35 and 50), the xt3 is around 1500€ so if I go for him I'll probably have to delay my buy to get some money and buy a used 35f2.

The camera I'll buy will be probably use for my future pro work and I don't know how perform the xt2 for weddings, especially in low light and with old Fuji lenses. From what I've heard, the xt3 af is really good in those situations.

The camera will be used for my streets photo (I find the x100t too wide for what I do), the snappier xt3 af and better afc can ban be great.

I don't really care about the improved burst rate, megapixels, videos features or improved evf (unless the xt3 is way better to show the real exposure of the picture (I found the x100t evf too contrasty and underexposed compared to the image viezed on the backscreen/computer).

Basically I see the xt2 as usable pro camera but not ideal and the xt3 as totally ready for pro works, Wich make my decision much harder considered my financial limit.

I don't consider to get a xh1 (way too expensive new and hard to find used.)

Thanks for your replies.