I would have to call that VERY optimistic LOL. Scooter, I have been running the .45VP with a 10MM carb in warbird racing for 2 seasons now. The best props are the APC 9X7 sport and the 9.5X7 pylon prop cut down to 9.25". I run the same muffler as you and 15% nitro and Enya #3 plug. This is the setup I have finalized with after a good 6 months of testing fuel, plugs and props. One thing that will really help wake up the engine is to take off .025 from the top of the exahust port. Mine is a little funny as with the stated combo it actually hits the pipe on the ground. Thinking this was an indicator that too little prop was being used I put on a prop with just another .5 pitch and lost speed. But try the 9X7 on your Q500 I think you will like it. A Q500 has about the same drag as my warbird but I carry another pound.