Do you or will you have more than one bike?

I think a SS would make sense in your situation IF your situation doesn't change and you don't think you will want to ride farther or tougher terrain. Or if you have another geared bike that you can use for longer distances. If this will be your only bike, I think a 3 speed would make most sense. They are very reliable and can handle hills and make longer distances easier if you ever decide you want to do that.