A few quick thoughts:
-Doing 8-10 dual review/proficiency flights at the Private Pilot or Commercial Pilot level, before you go all-in, can give you an idea of if it is still for you.
-To be blunt, just make sure this isn't a phase or a "passing fancy" (lol) before you commit.
-When you go to a school, pay as you go. Don't give them a lump sump (unless a university program or the like), that can be bad if you decide it's not for you 10-20 hours in, but they have your money.
-Going to a 141 university program (or schools like ATP or CAE, though I've heard horrid reviews from a lot of people about places like those) has partnerships allowing you to get to regionals and some majors at 1000 hours.
-University Programs (if accredited, check on that) allow you to get an R-ATP at 1000 hours. They also train you up to the level you want, and hire you back as a CFI. Insurance and liability can also be better. Wherever you go, make sure they are insured and that you insure yourself. Don't risk it for the biscuit.
Happy to answer other questions. Best of luck to you