I have same setup, about 3lbs lighter but fly at 5,000 to 7,000 feet elevation. I have found my g-62 really likes to run around 7,000 to 7200 on the ground and then unload in the air. I currently am flying with a Zinger 20x8/14 prop as recommended by some of the old time giant scale fliers. The plane flys really great with this combo, takeoffs are not as good but perfectly acceptable. You have to get up and then do a slight dive to let the engine "come up on the Pipe" but from then on she really screams. I fly with other guys using the TF P-51 and a G-62 with Mejelick carbon fiber props and I am getting at least as good performance as them and flying just as fast. I do have a bennet muffler on my plane as opposed to the slimline which I imagine is somewhat more restrictive. Converting to electronic ignition will gain you no power, just easier starting. My g-62 flip starts in three flips just like the EI engines so I don't see much to gain going that way. You need the weight up front anyway. As you might already know what works good on an aerobatic airplane doesn't always work on a warbird. If you don't like the idea of trying a Zinger 8/14 prop you might try a XOAR 22x8 or 10 prop as they seem to work very well for a good price.


Larry