Randy,
I had my RAM 500 almost at the tail end and the ECU battery aft of the canopy. All other electronics were in the cockpit with nothing forward of the nose wheel and I still had to add 3 ozs of lead to the very back. I did have the stock vertical stabs though. I did find the speed brake helpful though maybe not necessary depending on your field conditions. With the speed brake the landings required very little elevator input as the nose would raise up with the SB deployed. I imagine having the engine at the very aft also helps.
All,
I really enjoy seeing all your different Enforcers. What a great airframe it is to be able to modify and still fly great.
Larry