You should probably start thinking about eventual goals NOW instead of later.
A stroker crank is something most people do once they have the other parts needed to optimize the power potential.
A good aftermarket pipe works well on a non-stroked engine as well as a good sized carburetor.
If you are already in the market for a crank (yours is shot) then a stroker makes a bit more sense even if you don't have any aftermarket parts. It's there, while it's not really adding anything by itself it's not really hurting anything either. Once you get enough money together to get the other stuff, it's waiting for you.