8C is pretty darned cold for a wetsuit. Personally, at that temperature I'd only consider my wetsuit for shallow, short dives, only 1 dive per day, and would likely turn the dive with plenty of gas left. In a drysuit at those temps, I can do multiple dives per day which are limited by gas/deco rather than cold.
The difference is like night and day. Go for the drysuit, you'll be much happier.
The difference is like night and day. Go for the drysuit, you'll be much happier.