If you really want to start doing bands, $10k isn't going to get you very far. Just recording a drumset alone will set you back at least that much. You will need a suitable room (that means construction and double walls), at least 10 mic preamps, $1200 worth of cheap, but good, drum mics, $200, worth of cables, etc...
Guitars need a different room (more construction), and different mics and more preamps, etc....
I'm not trying to discourage you. But realistically, $10k just isn't that much when you are trying to do bands. A lot of bands like to play all at once. That means you have to have the rooms to isolate the drums from two guitar rigs and a bass DI and a vocalist all at the same time. Even if you use nothing but SM57s for everything, that's still almost $2000 worth of mics, then you need cables and preamps and converters, etc...
Save some more money or just keep doing what you are doing until you can make enough money doing vocals to justify the jump to the next level.