Rob,
Since you have an HW-30(practically an R-7 without a Rekord trigger) why don't you get the R-9? You or I will never be able to tell any accuracy diffeence between an R-7 or an R-9. The R-9 is SLIGHTLY more diffacult to master, but with a little practice, no problem. Don't let the 40lb cocking effort scare you off. Really nothing to it for an average adult. If outdoor hunting/pest control/shooting is your thing, the R-9 is your gun.
You DO mention the main use will be 50ft indoor target practice. If this REALLY is the main use for your air rifle, there's really no reason to not get the R-7. That's EXACTLY what it is design to do.
I have several R-7s and R-9 so I think EVERYONE should have a couple of each!