Ron,
Did you measure the angle like Mcleod did on his drawing? That's the 11° for the mono and 17° for deep vee. Mini-the deadrise, which is like your "s", but measured vertically, varies to suit your taste.
Watch out for water spray entering the boat when it's in a turn, you might design the deck to overlap the sides from the bow to 2/3 aft, or all the way back. This will deflect the water away. Where is your center of gravity, low or high? Where does the boat balance along the keel? Try to make the boat balance at a point 28% of the length of the boat, measuring forward from the transon (stern).
A boat with a low-slung engine will be more stable in roll, but if it's really low, the boat will tend to pull out of a turn and go straight. With the engine mounted higher, the it will be easier for the boat to lay over when turning.
Cool stuff! Good luck!
Will