I am planning on doing a sprint tri in June here in Michigan and was wondering if I really need a wetsuit? I know it helps with floatation and obviously warmth, but the swim isn't very far and honestly, it sounds like the most complicated part of the transition! And because I'm only planning on this triathlon for the season, I'm think I'll pass on the suit. Does that sound unreasonable? Lake temps for June are usually hovering close to 68'ish.