If you are adventurous I recommend diy after a call to cgw. There is a huge amount of how to info on the internet and lots of people here and on the Enos forum who can help with questions.
You can go to the CGW site and start with the ultra-lite kit, it's $50 + shipping VERY well spent. Be sure to order the right one for your CZ model. I've installed this on a couple compact models, and can't imagine it's much different with the SP-01. You can't be very far away from me, glad to lend you a hand with this if you want.