You absolutely SHOULD be at full power on take off, just don't punch the throttle at the start of your take off roll. Just gradually push the throttle forward (maybe 5 seconds from start to full throttle). You want to be at full power to avoid stalling immediately after takeoff (thats stalling aerodynamically, not deadsticking). Once the wheels lift off the runway, don't go to full elevator. Just a touch, let the plane continue to build up speed, and do a nice gently climbout. Once you're about 50-60 feet up, turn gently away from the pit area and enter the pattern.

Brad