Hello, Im new to diving (17 dives so far) and have never been in cold water. Im planning on starting with some Door County shore dives in a 7mm wetsuit with a 7/5 bibbed hood, 6.5 boots, and 5mm gloves. Right now, Im planning to do my first dive on Memorial weekend but would like to go sooner if my 7mm will keep me warm enough. Is a 7mm with the options I listed warm enough for May in Lake Michigan? Ive heard people mention ice-diving in 7mm wetsuit but then Ive also read postings where people wont dive in a 7mm until the water reaches 60 degrees. Whats it really like in a 7mm?