Several solutions: Use flaperons to increase lift and drag, add a little throttle to control the descent rate. should give you a steeper approach that is not too fast.

Use spoilerons to dump lift and let the plane come in at a steep descent, then, flip off the spoilerons and land. (Actually, this is more for a steep elevator approach to a landing).

Learn to fly slower. Doesn't have to be a super nose high harrier approach. Take the plane up high and learn its characteristics at slow flight. Add elevator to slow it down and add throttle to control altitude. Soon, you'll be flying "behind the power curve" This will allow you to chose the speed to fly at (from hover to forward flight). You do not have to land like a deadstick glide. Pull the nose up to slow down and use throttle to control the sink rate. These bigger planes will not snap over on you at slow speeds. Actually, I think it takes quite a bit of energy to snap, so don't worry.

Vertical dive approach, pull full up for a parachute, then elevator to a harrier landing

Inverted downwind approach over the runway, when you get to the approach/downwind end of the runway, give full down elevator for an inverted wall, and harrier to a nice landing into the wind.

The last two also adds a big wow factor. The third technique is good for most.

Have fun.

edit: oh yeah, a more rearward CG will make it easier to slow the plane down. Nose heavy will tend to make the approach faster.