RE: How windy is too windy?
You may have gathered that there is no really good answer to your question. The more comfortable you become with wind, the more wind you can handle.
Flying in a laminar wind straight dow the runway is just plain fun. Flying in gusty, unpredictable crosswinds is, for me, too much of a risk for my expensive planes.
I have flown in STUPID windy conditions and found that it was not as much fun as I had hoped. Today, I flew in a very steady, light wind, straight down the runway and had a blast!
Landing your plane with zero ground-speed is just hilarious. Flying in wind will help you master rudder and throttle, do it.