Is standing the guitar up bad for the neck? Should I put ym electric on the stand and acoustic on the floor?
It's fine. Get a stand for both though, the floor is a bad place for instruments.
My guitars have stood up since I got them. No problems yet. Hell...even the intonation is perfect on both. Standing them up won't cause harm. I recommend a stand for when you're taking a break from playing and a hardcase for when you're not playing.
if standing them up was bad, the were all ****ed. cause just about every stand is made like that.