Dennis the dry suit sounds like a good idea, I would mentally "measure" your potential crew and get a suit that would fit all of them.

I ended up buying a couple extra wetsuits for my crew rotation, 2 trap harnesses, 2 lifejackets, 2 sets of gloves.

The new surf wetsuits from Rip Curl are very comfortable, nice and stretchy and affordable, they were having a buy one get one free from the factory. I think the first one was $159

The key to a non smelly wetsuit is to rinse it out in fresh water after each use. My wife grabs my gear once a while and throw it in the washing machine when I'm not looking. Cold water, delicate.

And yes, I pee in my wet suit.