RE: engine
Even after it is broken in I suggest you always run it slightly rich. That TT Pro .46 will last you many years.
I have been running an 11-7 MAS prop on mine with great results. It pulled my 7-1/2 pound Kadet all over with good vertical.(of course it is a trainer)
I just moved mine to an H9 P-51 with a 10-6, 3 blade prop. We will see how that works out soon.