A 3 mil with upper 50 s is always good to go. I'm very comfy. Never even heard of 5 mil suites now. Whatever stay comfy I am. A 3 mil is a lot better flexibility and plenty warm. Air temps were mid 40 s but water temp is more important. Toss on ur 6 mil in July hahhaha. Weirdos. 38 temps and. 5 mil that makes sense I would actually go a 6 mil but per what oven been hearing from this crew besides cresto 4 is everyone needs a 5 mil in upper 50 s water temp. I would think you'd want less suite for flex.