How serious are these 4-5 races a year going to be? Handbuilt formula/reflex wheels are <$200.

The campy would be my last choice. it's not a flipflop which is just going to be a hassle. I train and sometimes race on da/reflex rea and it's fine but when it comes down to it the reflex hub isn't that much better than the formula. I only got it cause it was cheap as ****.

If I needed new non-aero wheels I would probably go with the formula/reflex prebuilts or something used.
If I had $600 to spend on race wheels to make me as fast as possible I'd get the prebuilt formulas and an aero wheel.