Hrmm interesting questions Hoist.
No real reason to buy a new cam plate the latest ones are pretty good, the oil pump in the 07's is a cross of the newest fueling and the old fueling that was branded by Harley. The latest in your 110 is pretty good, although the super flow is better. The heads will need some work, although I wouldnt go larger than the valves in there if your looking for torque. The heads need to be flowed, ported and polished (massaged). I would not go larger than 50mm on the throttle body and if you go with the Screaming Eagle one you will get the larger injectors 4.89 gm/sec. Personally I would not spend the money to go from 110 to 113 as they should deliver very similiar numbers with the 10.5 to 1 pistons, headwork and appropriate cam.
High Flow Oil Pump, Fueling Lifters, Roller Rockers, Pistons, Headwork, and schim, and adjustable pushrods, and push rod tubes, Cam, and tune and you should be good to go.