Hi, Joe:
Welcome to LW.net. You don't necessarily need to invest in a sewing machine to make wallets. Sure, it'll speed up the construction process, but you might want to try hand-stitching your first couple of projects before making such a large investment. (Some of us old-fashioned folks even prefer to hand-stitch.)
I don't work in exotic leathers, but I'd suggest checking Springfield Leather, as they can probably meet most of your supply needs. Regarding tools, I'd guess you'll need needles, thread, a stitching awl, leather shears, white glue or contact cement, leather dye, maybe edge dye... Hmm... What am I missing?
Good luck on your first projects, and be sure to post pics!
Best regards, -Alex