i'm flying mine at 6/1/8 inch back an aft cg will do the opsite of what you ask it will try to slow its self down by droping the tail at slow speed if you put the cg were mine is get ready for a wild ride the only time i'm in a strait lin is when in taxeing out to take off on the groundtry 5/1/2 back 0 your new to planes put the cg were the book says you didnt say what engine your running but the a good flying plane i have a satio 150 on mine and it works good and when you get ready to put the cg back farther than 5/3/4 you will need a lot of weight i have a 2700 battry touching my elevator servos my slab is i think its a peace of panling i know its heavy if your just wanting to fly around and hover some 5/3/4 is fareback mine climes like crazzy inverted