Well, I am not exactly sure what your question(s) are. I guess the following;
*Sorry, albino cories require a group of at least 5. At 2.5" they aren't suitable for a 10g tank or less (not really sure what size tank you are working on).
*Your right, neon tetras wont work with that water chemistry. IMO neons and bettas don't go together (except for you betta, Neon lol)
*Just a note; it is very diffecult to have a community with a betta in it in a small tank. Especially with nippy-species. The betta might just be happier by itself (like mine was when I took it out of the community tank). They are more likely to build bubblenest.
Is that all you needed answered?
FireOasis - 3g
Zachary the Halfmoon Plakat
CichlidHaven - 55g (under construction!)
0.0.7 Black Widow Tetra
1.0.1 Convict Cichlid
0.1.0 Firemouth Cichlid
HermitBase - 10g
Zephus & Monoculus the Purple Pinchers (Coenobita clypeatus)
x1 Convict Cichlid Pair (actively breeding)