My current PA-12 Super Cruiser ARF (50") weighs about 36 oz. with a 3s 2100 battery and park 400 size motor. It has pretty nice characteristics but to really slow down the landing speed I have to dial in flaperons. Without flaperons it is a little hard to setup landings in a small park (given soccer goals, backstops, lots of trees and the occasional person or dog) but it is not impossible. At 1/3 throttle it looks quite scale in the air but handles a breeze way better than my 17 oz. (48") Mountain Models L-4.
The two planes I am currently building have dedicated flaps. My main interest is park flyers that are about 2.25 lbs. or lighter.
I am not taking anything away from the MM L-4, it is a really great plane. I would highly recommend it for Cub fans.