ejmack,
I agree with the previous posters. If you keep your big board go down to 100l.
Having said that I'm also 80kg and have 110l and 85l boards. I reckon this is the perfect combination for the bay given my bodyweight

. Gives me the whole range from 10-15 knots to 30kn.
And for me the 110l is just big enough to uphaul without too much effort when it totally drops off, whereas on a 100l I struggle.