I would think with pygmies, you could up their #s. Maybe stick with 10 albino corys for now (all the same species if possible, there are a few different types now) that's a nice number. But pygmies are almost low/mid water little swimmers. To me, they're almost not "bottom fish" in a way.
I love that you might have nice big school of rasboras! that's more than I've ever had. I bet it will be fab! We're going to need pics!
Crypts are my fav plant genus! Lots to choose from, all are wonderful & most are easy to grow. Try some, you'll like them! They like a bit of root fertilizer near their roots. They will grow toward the root tab. When you first try them, the leaves often may "melt". Any extreme change in parameters can cause that but if roots are healthy they recover in a week or 2 with new happy growth. Don't be put off by that "crypt quirkiness", not all do it but many do. Be patient! I think pygmy cories will love to perch on the leaves!