IMO, you need more than a 46g bowfront for 4 angles. Angles get saucer sized and need room. I'm not sure why all the focus on breeding? You say you're brand-new at this. You gotta crawl before you walk so to speak. Like Bob suggested. A single angle fish would make a great centerpiece fish for this sized tank.
I have no interest in breeding the Angels, that was mentioned by RB. The guy at the store just said a pair is much better looking and behaving than a single, and having a matched pair is better to prevent aggression. I want 2 max. I would start with 4-5, but once they paired I'd return all but the pair, long before they get full sized, and long before I had more than a few fish in there.