There’s nothing written in stone for glass schedules/layering, but generally speaking, longer boards would have a heavier schedule like 6-6/6 or a 6-4/6 and the shorter boards might get 4-4/4 or a 4-4/6. At a minimum, I prefer a board glassed with 6 for longevity over lightness (and I’m pretty rough on boards). In regards to 8 - seems mostly used for longer or specialtly application boards.
What length are you making, what weight are you, do you want a light board or one that is more durable? I’m sure some sugesstions will follow.
As for two hotcoats - I don’t see a problem with it. I’ve applied two in the past for the same reasons. The only warning would be that too thick of plain resin (resin without cloth) can susceptible to cracks when it flexes. If you do the second filler coat, just try to sand any unnecessary off. Your glass/resin outline is on target.
Dan, I’m close to your weight 105 kg and my suggestion for a board that lasts is 6 oz bottom, 6 oz top, a 1/2 to 2/3 length 6 oz deck patch with a stomp patch of 6 oz where you need it most.
One hot coat each side, then the finish coat is thinned with styrene.
All in UV laminating, add home-made surfacing agent for the hot coat and finish.
I have never done a second hot coat or (yet) used what we sometimes call a cheater coat along the lap. Doesn’t mean that I won’t use a cheater coat, though, especially with UV resin making it so quick and convenient.
Yes the board will be heavier than shop stuff, but a LOT more durable. My current board is almost 5 years old, but I’m not doing aerials on it.