I also think you may risk overwhelming your room with these speakers. If you go this route you should consider budgeting for substantial room treatments and perhaps even going so far as reconstructing the walls with resilient channels, etc.
That said, these are both great speakers but I'd make sure they will work with your amp since they both drop to 4 ohms or below, and I've never seen any Rockports or YGs powered by tubes at shows.
At one of the NY audio shows I got to hear the Carmels playing St. James Infirmary and they did sound quite good but just a tad boomy in a good sized room. Ironically a few doors down I heard the same song being played through Joseph Audio Perspectives in a much smaller room and I thought they sounded every bit as good as the Carmels but better balanced in the bass region (both speakers were driven by digital amps I believe). Obviously there are lots of variables here, but might be worth putting the Perspectives or maybe even the Pulsars on your radar, and they have the additional benefit of being relatively tube friendly unlike the others. That and they're considerably cheaper leaving you a good chunk of cash to deal with your room, which, as many will attest can be as important or even more so than equipment. Hope this helps and best of luck.