If you don't feel comfortable repairing your spark plug hole, I'd suggest taking your Wing to a mechanic for repair. A striped spark plug hole is not all that uncommon for a mechanic to fix. Most have fixed at least 2 or 3 in their span of being a mechanic. In almost all cases, the head does not come off to do this. The drill and taps are well oiled to capture metal particles, and compressed air is used to remove anything left behind.
Of coarse a repair like this has risk involved. Worst case is a metal shaving being left behind, it does not exit past the exhaust valve, but gets trapped and stuck in the valve seat. If that happens, then the head must come off. The mechanic will know when the engine is started. However, the percentage of a head coming off, for this type of repair is probably lower than 10%. If that happens, your repair costs will increase from probably 1-2 hours to maybe $1,000 - 1,500+.
Although I've never repaired spark plug threads on a 5th gen, for a kit, I'd look here first. As you can see, they even make specific kits for engines that are known to have problems. If they don't have the kit, you might want to order one in and hand it to them.
http://www.timesert.com/html/sparkplug.html
In the future, I'd recommend you use a high quality, 1/4" drive, torque wrench. On a 5th gen, I don't think I have ever torqued spark plugs like the others are recommending. I do know that the Owner's Manual says to tighten like the others say, but instead I use the method in the Service Manual.