Not heard of Alpen before, with a quick check seems that their spotting scopes have some cred.
They don't provide much in the way of detailed specs for the scope.
Whatever rifle you end up with, equip it with a down-angle base. It'll give you that additional "up" elevation adjustment if you need it.
The 30mm tube is a good sign, but it's odd to see 1/8 moa clicks on the larger tube. I'd like to know amount of elevation adjustment available on that model.