porker
I am doing some test with a 55" and forward swept wingspan with a 6/7" blunt nosed airplane with a ST .75 on it for a project of mine. I have the weight up to 12 lbs now and it still takes off on a grass strip ( about 275 ') and does something that looks like a loop and decent rolls. I am using full length flaperons set at 40 degrees down on take off though .....it didn't seem to want to rotate without them when it got up to 10 lbs .I plan on going up to about 14 lbs before I stop adding weight.The 12 lbs puts the wing loading up to about 55 oz/sq ft.It shouldn't fly.,but it does.....
Good luck and have fun with it.

Larry