Well folks, I did it the easy way! I just blocked the aircraft up at flight attitude and put a mark on my workbench at the trailing edge of the straight bottom wing. Then a line on my bench at the lead edge of the top wing midway out from where the wing starts to sweep to accommodate for the sweep and put a mark on the bench at that distance and balance at 30% back from the total distance from the lead edge mark and the trail edge.

It fly's and I brought it home with the same number of pieces I went with! It was a little scary,
I used the G-62 I took out of my 1/3 scale Laser 200 before installing a DA70 wasn't running as good as I had hoped,
I didn't make any tight turns for fear of it dropping out of the sky it wasn't running well.
I had a 20/8 Zinger up front, next time I'll lean it a little more and try a 20/12 Zinger and get a buddy to help me hold the nose up to make sure it's not too lean.