I want more of the older soundtracks, too. The newer ones are a disgrace to the series; as are the games. I have nothing to complain about on your list, but for cheapness sake I'd be fine with the first 3 ones only. Until the fourth installment they really put effort into the save themes in particular, but in the later games, they either don't have any or they just fail. It's a shame, because the save themes were always my favorites.
If you're looking for Bio Hazard Orchestra Album, it can be bought at Otaku.com (new condition).