I prefer the rear mounted side stand too. But there are times when parked on a slope when the front wheel will want to roll sideways, so you should either have a loop of bunge cord to use as a parking brake on your handlebar or plan to spend a few extra seconds when you park it to make sure that the parked bike is stable.



Regarding kickstand and wheel size, if the stand is too long, that is what hack saws are for. But only cut a bit at a time to make sure you do not cut too much off. When I worked in the bike shop many years ago (back in the days when kickstands were included on almost all bikes), we used a hacksaw on a lot of stands to make them fit right.