NEO, its vital to get the downthrust line (if any) perfect on a profile model (i think its a profile) as you can not adjust it easily if req'd. A mistake some designers /kits have is no downthrust. If its very light and well powered you will certainly need some downtrust, and it looks you have none. A way to get the thrust bang on is to make the bearers undersize, i.e. narrow by about 5 - 8 mm and bolt the engine on as far up as it can . note some of the body of the engine will fit into the gap so mightent be as extended off as you might imagine. Note weights might be req'd to wing tip, fly just long enough to check the vertical lines, if req'd remove engine and cut in more thrust, less thrust line as req'd.