congrats and great job........i built the 4*60 kit as a first kit and second plane.....another flyer took her up and trimmed her, handed the control to me and i've had a blast since then.....stable in the air, tracks like it's on rails, just a fun relaxing plane to fly. with the throws turned up it'll do it's fair share of maneuvers but i've heard the 4* series doesn't like to come out of a flat spin so i haven't tried that one yet.
the only issue (could be good or bad depending on your field) is the plane has such low wing loadings that they love to float, they float forever. almost, if not as much as a trainer. make sure you have plenty of room to bleed of airspeed.
Really looks good. I made those same mods to mine when i built her. One thing you might want to try later is cutting one bay off of each wing. That really brings the model to life
i've read some on this in the past and everyone thinks the same. i don't know since i've not had to do any covering to the wing. i've read that people do this for increased roll rates and to cut down on the "float" the plane has.
whatever you decide to do you'll love this plane. i still take mine for those times i don't feel like being on my toes with a warbird or 300E.