For a low wing, there is the Sig Four Star 40. Look through the posts and you will see lots about this plane. The kit is about $80-$90. It's a good build and a great flier. The 40LA would be a bit sluggish in the 4 * and you will probably out grow it quickly. A 40FX or 46AX would be a better choice. I have a Four Star, and I am looking to move up to the .46AX, or even the OS .50SX after a month of flying with the 46LA. The plane works fine with four standard servos.
Start with the recommended throws to start. As you improve, you can increase the throws. To start, it is better to have the CG at the recommended setting, or a bit forward. Moving the CG back will make the plane more responsive, and will make for a bouncier landing.

Scott