Truthfully, you don't have much of a choice. The diamondback has fixed parallax at 100 yds and if you're shooing closer, which you likely will be with the 22, then the scope is pretty much useless as the fixed parallax with give significant errors with check weld. Sure, you'll be plenty close enough to hit the shoulder of a deer up close but if you want to try to shoot dime size groups at 25 yds you'll be very disappointed. I tried it with my Bushnell 10x40 ET1040 which is a great scope at 100 yds or more but you can't shoot accurately up close.
If I were you, and you still can, I would return the diamondback and pick up the simmons pro target. It is made by bushnell and has the same side focus/parallax adjustment that your minox has. I put one on my 10/22 and am shooting nice small groups at 25 yds.