Dude.

Definitely water heat the intake. Then in the warm summer heat you can plug the hoses and the intake and re-hook everything the following winter.

And if I might add a smidgen of advice - you ought to consider at least a mild (if not a 3/4) cam for your engine. With the other mods you have it'll improve gas mileage and really boost throttle response, probably top end too.

-ftyler