Now that I found I cannot use the peep sight on my 39A, I would like to scope it instead to help these old eyes.

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I already have a Nikon Prostaff on my 10/22 and think it is great. I have been reading about the Weaver 4X, but really have no experience with it.
Can anyone give me any insight to a good rimfire scope that will not break the wallet?
I am only using the lever action for plinking and a squirrel or small pesky critters.
I will also need a set of mounts to go on the rail that came with the 39A. Any suggestions there as well?