OP, you mention target shooting. If you want to shoot your best groups, and the gun's best groups (assuming it's as capable of delivering sub-MOA groups as most CZ rimfires are), you will need some magnification. I used to use a lot of 3-9x scopes, but over the past 10 years or so I've gotten to the point that they just aren't satisfactory for any gun that I'll be using for target shooting. To the point that I've sold most of my Weaver, Clearidge, and Leupold 2-7s and 3-9s because I just don't use them anymore. This is because almost every time I have a rifle out, I end up shooting for maximum accuracy (or tight groups, if I'm just shooting paper), and despite whatever you might read on the internet, 9x is NOT enough magnification to shoot the groups that an accurate gun is capable of at 50 yards or greater.
I have a bunch of CZ rimfires and 16x is the lowest max power I really prefer on them, even on the sporters (though I do have a couple with the Burris Timberline 4.5-14x on them). For the guns that I'll sometimes be shooting at 100 yards (sporters or Varmint guns), I like a 6-24x, such as the Weaver V-24 or Sightron SII 6-24x42.
For the CZ rifles that are a mix of plinkers and target shooters, I like the Weaver Grand Slam 4-16x44 quite a lot (this Grand Slam is a great scope for the CZ 452 hog-back guns, and very pleasant to sight through). The 16x is a limitation at the range when the shooting gets most serious, but I can be content with it at 50 yards on guns that I also use for less serious shooting, or hunting (which usually requires relatively little magnification).
So, IMO, a critical question for you is, how much of your gun's potential do you want to be able to tap? If you don't know, I would be looking for something that goes to at least 16x on the top end.