Lighten it up as much as you can. You won't regret a moment spent doing that later on. Drill everything and then wear out your arms with some sheets of sandpaper. Go easy on the finish for even less weight.

As for the wing it seems to be a fairly generic airfoil. If you don't mind building a second wing and want something that is stall resistant I can recomend the Eppler 474. Some buddies of mine that were flying control line combat needed an airfoil that would turn super tight at high speeds. The stock airfoil was stalling under the G loads and tossing the model into the circle on them. A change to the Eppler 474 eliminated the stalling so well that they were able to turn tighter with the same loss of airspeed without fear of stalling or they could open the turns up to match the competition but keep more of the airspeed for a solid advantage in coming out of the corners.

Also making the tips about 10% wider will help to avoid tip stalling a lot.

It looks like it would be worth the time. That's a pretty good lookin' ship.