Oh, one other issue with rim brakes is looking at how wide the brakes open up for removing the tire. You can always deflate the tire when mounting/removing, or remove a brake pad, but those methods are a pain.

I'm not seeing photos of all the tight areas, but the crown looks pretty short.

Hmmm, looking online, it looks like the brake is up and out of the way, but the crown is a little short. You might want to stick with the 30's.