So I asked the LFS and it looks like the only bichir they can get in are albino senegals and regular senegals. :(
I'll double check about the long fins. But blah, what a disappointment. I was told not to keep 2 species in such a small tank, but still a long finned one would be nice. Still, better than nothing since our Petsmart doesn't carry them.
I'm doing a reseal on the tank, and I warn you, never do it.. I spent like 5 hours sitting inside the fish tank scraping off old silicone. At first, I figured it wasn't worth it. But then I remembered I'm an unemployed teenager and don't have any other choice if I want big fish.
Also, I've realized, looking at all the MFK bare, decorless, overstuffed tanks, that my dream is to provide natural biotopes for monster fish.
That'll go over well.

I should just work at a zoo.