Steyr LP 50

I bought a 10 meter air pistol to practice Bullseye when I can't make it to the range, I really have no interest in shooting any competition with it. After using it for a bit I really miss being able to practice rapid fire so now I am looking to add a Steyr LP 50 to the collection. It looks like there are 3 power versions and each version comes in standard length and compact. I am thinking the compact is the version that would most replicate the size of our Bullseye pistols that we are using now? What length would you get to practice bullseye with?

I also see that the version that I would want is the RF since its power is right in the middle of the original and the HP but I don't see any available in the RF anywhere so if you had to choose between the original version the the HP what would you go with?

I have an LP5. Full-length, 1911 grip adapter, 3.25# trigger. 

Pilkguns can advise you best.