Though technically a good idea, that's nuts to hire a lawyer for doing local gigs. Are you writing? Copyright law is a bit more complicated than playing gigs locally, but unless you're at the stage of signing away publishing that's not necessary yet either. However, you should apply for legal copyright to the Library of Congress to protect any songs you have written.
Contracts are nice, but at the local level you may not be able to get a venue owner to sign anything, thereby keeping you out of work. Locally, it's usually a matter of taking someone's word, and being good for your own word.
Go get a DBA form from the courthouse and register your name, a few bucks. It isn't actually a legal nationwide trademark but it might help establish your usage if you end up needing that in the future. Start saving all receipts to deduct from your taxes, maybe (just maybe) get a band bank account?
I'm sure there are other concerns but it really depends on how serious the band is about staying together and working professionally. If you think that it makes sense, you might even get a business credit card for gear emergencies or other payouts
Looking for PRO musicians that can travel