If you're gonna be firing at greens, probably a hybrid would be best. They're designed to be as controllable as an iron (same length shaft) but will hit it higher so it will land softer. Most folks can't hit a 3 iron high enough as is, but if you can then maybe hit both and see how you feel. I'm not a big 5 wood fan, but that's just me. I play a 3 iron and 2 hybrid usually, but sometimes I put a 3 hybrid in the bag. Just depends on how I'm striking the ball.