A CZ 453, 453 or 455 will work fine for a Small bore Hunter class rifle.
Basically it must have a traditional stock, a trigger pull of at least 2 pounds, a tapered barrel and the bottom of the scope can't be mounted more than 1.5" above the receiver.
Optics don't have to be uber expensive. A Leopold VX2 3-9x40mm will get the job done as the optics are very good, it has finger adjustable turrets, and while the magnification isn't huge it's adequate and won't over magnify the wobble common for a new shooter.
Figure $450 for a CZ 455 American and $300-$325 for the scope and you're off and running for around $750-$800.
This combination is capable of 1 to 1.5 MOA accuracy at 100 yards with mid range match ammo like Sk Standard Plus or SK Match Plus. That level of accuracy is more than enough to be competitive.