Money on nice optic is never wasted... even more so on a rimfire rifle... because it will mostlikely be the firearm that you will shoot the most rounds through.
When ever possible, look for a "rimfire" specific scope from Burris/Weaver/Leupold, a rimfire scope will have it's paralax set to 50 yards (while centerfire scope will be at 100-150 yards)
Safe shooting,
Mike.