1) some say you can, some say you can't. If you do, most recommend a bench capper to make life easier. If you do use them there is a chance for oxidation and/or no carbonation. As far as the pry offs are concerned, check your recycling center, ask bars, etc. Shouldn't be too hard. Or you can buy a case of your favorite beer and get a case of bottles that way, with beer already inside!
2) with a quick look at some info on diversol, it looks like you HAVE to rinse. I would suggest getting a no rinse sanitizer. Diversol appears to be made partially with sodium hypochlorite which is the main ingredient in household bleach.