I bought a P-07, the first CZ I've owned. I had it about a week or week and a half and decided to order the kit and just do it myself.
I didn't want to wait 10 weeks and also have to pay another $80 or $100 bucks, what ever it is for them to do it. I had never taken the
gun apart but found it to be pretty straight forward. The numerous videos on You Tube and the CZ forum helped a lot. Get 600, 1500
and 2000 grit sandpaper, dremel, polishing wheels and compound, punches a small screwdriver, hammer and you'll probably be good to go.
Watch a couple of the videos while you're waiting for the parts to be delivered and you'll have a good start on it. When the parts arrive
set up an afternoon or good part of the day and get busy. It's really not that hard or confusing with the videos. It made such a difference
it was amazing. I bought a P-09 a couple weeks after that and promptly ordered the parts and did that one also. The first one wasn't hard
but I proceeded cautiously, the second one was a breeze. I'm now playing with different springs and loads to see what still works. You can
get a pretty damn good trigger out of your efforts and CGW parts. I say go for it, you'll be glad you did.
EDIT: I don't know why it's showing in separate sentences, it isn't on my preview post screen, can't get it to show correctly.