The route I went and my suggestion to you is to take an intro flight and then enroll in lessons at a local 141 flight school. Schedule as much weekly flying as your schedule permits. You can likely still work full time all the way through your multi commercial, paying as you go. Once you are ready for your cfi training, then you can quit your job and go attend one of the many reputable CFI factories around the US.
I think it’s absolutely ridiculous to drop a ton of $$ into these zero to hero programs.