Looking at your other topic does draw some concerns for the type of flying your interested in with this plane.I have experience with 2  planes in this size range,a QQ yak 72" and a 3Dhobbyshop 72" 330 SC extra. The Yak weighs 11.5lbs and the Extra- 9lbs 13oz with my lightest setup and 10 1/2 lbs with the heaviest.. The Yak has about the same sq"  of wing as the Suk and the Extra is a little over 1000. the Yak has too heavy of a wing loading and wing rocks. It is alot of work to 3D too. The Extra is a great at 3D but is noticably less floaty at 10.5lbs and will snap out if you pull too hard with too much speed. If I was going for the Sukhoi I would make sure it wasnt over 10lbs. It will definetly be way different than a foamy. Gas will be lighter than electric usually so I think thats a good start.I learned some hard leasons letting some of my planes get too heavy. they just arent fun to fly. Also I have found that SFG's when designed correctly can add alot of stability to a wing rocker (like in harrier). I have come to belive that the best flying models are 42" or smaller foamies or a 100cc. Everything in between just isnt as much fun</p>