A person has to realize their own limitations. From ever bit of research I performed on re-gearing I would not have attempted this. I paid a well known area Jeep shop with plenty of experience and it was money well spent. They stand behind their work and honor the gear manufacturer's warranty.
Excellent point. If the OP has the time and willingness to learn it sounds he's most likely capable of getting it done. Knowing your limitations is very important when it comes to this kind of stuff. I have a new set of gears sitting on a shelf but I doubt I will do them myself despite the fact I used to do this for a living and still have all the required tools. It's just too time consuming for me and, at this point in my life, I'd rather pay someone to get it done for me so I can spend my time and efforts elsewhere. In my 20s and early 30s I had no problem turning wrenches on my back long into the night for my latest project - at this point I'd just be frustrated thinking about all the other stuff I have to do!