Hi Claude,
I'm not sure about your location, but I'm sure someone will answer soon
But I was just wondering if you haven't thought of getting a dry top? Perhaps wear a 'farmer john' wetsuit for the lower body and chest (sleeveless) and a dry top, as it's a lot more comfortable. Or just some wetsuit pants with the dry top. Or a dry top and pants, or even a dry suit - budget depending.
Wetsuits are not that comfortable, and irritating when you need to take a leak
Cheers,
Adrian