And the obligatory warning: do not use the decocker on any CZ-52. On many of them, it will function as a trigger, due to a worn interceptor notch. On all of them that have had competition firing pins installed, it will function as a trigger.
Don't use it.
In addition, though corrosive surplus is cheap, it goes everywhere in the frame. The pistol is a pain to completely disassemble. To me, it is not worth it to shoot corrosive ammo, because it affects more than just the barrel, but the little places you can't really get to.
You'll probably want to get an aftermarket machined firing pin, as the originals are brittle.
Other than that, enjoy your new hand cannon. Sounds like you got a decent enough price.
-Sans Authoritas