Similarly to you, this was my first CZ as well, so it made sense for me to keep it straightforward and get the YoDave kit.Since this is my first I'll try the Yo Dave. I ordered it this afternoon.
Just also completed installation of the yodave trigger kit on new CZ 455 American with very similar results -- 1.5 lbs pull and no noticeable creep. Could adjust out to 2.0 lbs with the square nut but 1.5 lbs is really nice for my use.I used the Yo-Dave kit on my 455 and it all but eliminated the creep, and has 1.25 lb pull weight. I think you can get it on Ebay.