Looking at getting another foil but not sure what I should go for.

Currently, I ride a North Speedster and I like to go up wind a few kms and then do S turns downwind on small bay waves.

I also want to try using my foil in the surf (without a kite), so would a sup foil be good for both or too slow on the kite?

Any recommendations of what my next foil should be? Should I get a big sup type foil or try something else?