I used the stock mount. Mount everything as far forward as you can. I mounted the throt. servo on the bottom of the fuel box, right behing the fire wall. I also am running a 5 cell 2500 mah pack that is mounted in the fuel tank area. It weighs around 6.5 oz. You will prolly need any where from 3-6 oz of lead in the nose. However, if you can keep the elevator servo out of the tail, and move it up front, this should bal. out perfect.
Hope this helps.