Using the wetsuit would be my first choice as it makes the buoyancy a non-issue, and adds protection from jellies and bumps getting back on the boat in sporty conditions.
Worst case, though, I'd put you at -12 lb with a full tank. Compensate +6lb with a larger breath, gently finning for another 6 lb and you're there. I'd first try to put the damaged point of the wing low, though, and restore functionality
It seems like when they fail it’s at least half the time the inflator elbow coming off