I built mine with the intentions of adding floats, but the total flying weight of 6.5 lbs scared me away from adding almost another pound of float gear. I used a Saito .82 and was surprised to need about 3 oz of tail weight. Nevertheless, it flies great and I use it in our club fun flys. I put quad flaps on mine as per instructions, but believe it performs a "dive landing" much better if the radio is programmed to raise the flaps and ailerons, versus splitting them. I tested the plane both ways and it definitely slows down better if all surfaces are raised. Yes, I suggest the US 40 would be a good second plane, particularly if an experienced RC pilot sets it up for you to fly more docile. When you are ready, it can be made to dance. Definitely add support to the landing gear block, be cautious of the wing dowels (they may wear significantly), and I would consider using Du-Bro landing gear. BTW; the Saito .82 with APC 14 x 4w pulls 9.4 lbs. Since the plane weighs 6.5 lbs it has great vertical. It will soon do better because I will rearrange the radio to eliminate the tail weight; along with smaller battery and throttle servo. Good luck.