You don't need a wing.I mean single sidemount.
So drysuit and wing. Although I suppose drysuit only wouldn't be the end of the world since I'm using a minimum of weight.
In the end I grabbed my BP/W but I'll definitely give this a try during wetsuit season.
You shouldnt be in a steel tank. Just use the drysuit and your "power bc" (scooter). It's not like you really need to be neutral, you're 90% on the trigger anyway.