Well, since I have one for the same purposes, let me chime in:
- Get some extra MecGar mags, they are inexpensive but just as good as OEM (in fact, they ARE OEM!), they come now in 17 and 19rd versions!
- Utilize that rail and consider a light/laser attatchment, you want to be able to positively identify targets by illuminating them. Dont rely on the laser to do anything other than to help you bring your sights to bear on target.
- My ammo of choice is Speer Gold Dot 124Gr standard pressure (with Federal 9BP and Fiocchi 124gr HPs in reserve). Your CZ can handle +P loads, but I prefer to stick to standard, since thats what I practice with. You should be okay with just about anything HP wise as long as its from a well known name, decide if you want to go with light, medium or heavy bullets and whether or not to do the +P thing but prepare to drop some coin on good HP ammo though.
- Now as far as practice ammo, these things will eat anything, I use Walmart/*&%$s bulk packs, Wolf, Barnaul, Bear etc... not one hickup.
ETA: one last thing, get a Kadet .22 adapter! With 9mm prices what they are, its nice to get some practice in on much cheaper .22lr, plus its a good way to learn to shoot a handgun!