Solution? Find a 160hp Robin DR400, which will take 4 normal sized adults and plenty of fuel, and still be within weight and C or G limits.
I was once lured by the prospect of a free flight into flying an overloaded Warrior. We had two aircraft mechanics in the back, an instructor (who should have known better) in the right seat, and me (who also should have known better....
) flying. Add to that nearly full fuel, and we were way over weight -
The instructor said it was fine, and I naively believed him. We needed 900m to take off, then climbed at maybe 200fpm. It was a slightly frightening experience, which I don't recommend trying for yourself!