I was actually at the LFS this morning, and I plan to go back and buy a 37g glass tank myself. I was just going to ask some of the very same questions as the OP, but it would be easier to just jump in here, I hope that is okay.
I was also considering an angelfish, but read that they will eventually eat smaller tetras? Is that true? I really do want a school of tetras. In fact, I'd like two if possible. Maybe the neon tetras, and x-ray tetras? Would that work, or is it bad to have two types of schooling fish? I'll also have an albino bn pleco in the tank. And I was considering a dwarf gourami or two as well, would just one be happy alone? Would he get along with the angel? And lastly, would there be room for another few fish, such as platies or mollies?
That's all for this thread, I'll start another one with more questions another day, I don't want to hog it. Thank you for letting me jump in, DarkAngel.