If you already have your CFI, and sorta current, you have what you need to easily get hired full time. You will just have to get schooled up on how a flight school in question teaches.
Without skeletons in the closet, take some steps on faith. Once settled, line up an early interview’ start class once required hours are complete. You don’t have to be at a full time CFI job over a year.
If you need certain types of hours, instrument(real or simulated), multi, whatever, you can add them in your off time.
Find a school that fits your plan. If you train with them for CFI add-ons, they will likely require you to sign up for extended time. If the goal is regional then up the ladder, no need to spend an extra year CFI’ing. Not uncommon to have a pilot over 60 in a ‘new hire’ class.