Well back in the day I actually owned the Airfoilz Edge 540 using the same set up motor&lipo set up as I put in this plane Hacker A30-28S with APC 11 inch prop with a 3s 1300 mah lipo I put the CG the same as well with the lipo resting right under the wing for my type of flying.I never was able to get my hands on the Yak from Airfoilz I believe it would've flown better then the edge 540 IMHO. I still wish Airfoilz was still around today enjoy!