This might "take the cake" for the tallest order ever received here! If you can't find any help, your best bet is to do a trial install of all the major components, even if all you do is tape and rubberband stuff in place. The CG on most models will fly at 25% chord, or in other words if you had a wing with an 8" chord, the CG would be 2" back from the leading edge. This is the best way even if GLEN was hear to help, because GLEN could only assume what your engine weighs.