There are so many other variables that it isn’t possible to say what exact area foil you should go with. However I would echo what has been recommended and go smaller side - less adjustment to catching small waves. Big foils are a bit shit, you have to nurse them over waves, nurse the takeoff, nurse the turns, need an expensive stiff mast etc.
Worth saying, foils (takuma especially) in your price often going to be structurally absolutely dead. Stiffness is really important for pumping (found this out on a mismatched mast, slop is really difficult to pump. Same with boards, old board will likely have very tired foil boxes (a shaper can replace them). The positive side is that you’ll want to try a few boards before you spend on something newer.
On the east coast I saw lots of Lift HA200s which while a bit big, are probably a good bet, and then a board for ~$400 and you should be ok for around $1200+ but looking to upgrade board and foil after a 6 months.