MIke
...go with the breathables, buy the next biggest size. That way in case you need to dress warmer underneath, you'll still have an inch or two to move in em'.......but I wouldn't worry about being "aggonizingly un-safely hot"... in the ones you have now. Be your OWN judge. Use them this upcoming season, and if ya don't like em'....buy the breathables....
Does that make any sense to ya??