Should I shave my head for summer?

As you have clearly define that you sweat too much, in that case you should stick with your decision. However, you should also try : Low Fade and Part with Quiff

In the end, it's up to you. If you think you'll like it, even a few weeks into the haircut, go for it. Just know that hair takes time to grow back, if you decide you don't like it down the road.

Whichever cut/style you like best, go for it. We could tell you to sport a clown wig.