There are two guinea pig rescues in St. Paul, so your statement about 'no rescues around here' is incorrect.
Rescuing is not a decision to be taken lightly. You don't want to just plunge right into it. It doesn't matter that you have tons of space. Logistically I could fit hundreds of guinea pigs in my house, but it doesn't matter because I couldn't care for that many.
Having lots of pigs can be fun, but realistically you provide a much better home when you aren't stress out by all the things you have to do for all those pigs. If you want to interact with more pigs, get together with someone else and play with their pigs for a while. Visit the pigs at the shelter and just hold them.
You know what would be a great goal? Build a 2 x 6 C&C cage and put Furby and another female pig in it. Enjoy your pigs, spoil them, and give them a good life. Foster other guinea pigs when you have the time and resources.
I don't know how old you are, but I would guess that by the time your pigs are older (4+ years) you're going to be an older teenager and there's going to be a lot of other stuff in your life. In a few years you might not want to concentrate on a bunch of pigs. Take it slow, enjoy what you have.
However, what you have now needs a friend. I have a darling single sow in mind, she's a ridgeback pig and she would like a home. PM me if you want more info.
I don't know how to connect two peices of coro together but it's bound to be on this site.