I think the scopes you have picked will suit you nicely. I would shy away from a fixed scope such as the Leupold 45X, while a great benchrest scope it's a "one trick pony". By that I mean you could be hampered with target acqusition on close shots(field of view is very small at 100yds and under) and with mirage on a hot day (just as the scope magnafies the target it also picks up the heat waves) and that can be a big problem. With any of the variables you can minimize these things.

I dont know if you have ever used the higher magnafication scopes(personally the M8 36X is my highest) but they do require more exact eye relief and theyexagorate everything including breathing.