I don't know about what happens at your particular ground altitude, but all this sounds normal to me. Perhaps a little lower in the idle RPM.. but you can judge that by the way it responds on landing. If you want a little more RPM, you may go to 10-8 or so, should be as equal to the original prop you had on there.

Every situation is different. Trial and error is in order at most locations and for your particluar engine/plane combination. See what works well and stick with it. This may mean a trip to the LHS and buying 4 or 5 different props and seeing what one works well where you are and then, as I said, stick with that.

CGr.