There's only four Eafots CO-R systems and the one closest to the RR-Line is Eafots CO-R B46-0, a red dwarf. Eafots CO-R C5-0 (G class star) is closer to and above the H&S nebula and possibly more difficult to reach than the others. Dang, I need an alter ego permanently parked in the Rift!
I like your take on the CO-R systems. But as others have stated, I've kinda drifted away from the RR line as being pinpoint accuracy and look at it more as a big general arrow. Could you do me a favor and list the other CO-R systems that you've found? (If you don't mind.)
I feel like getting these system names out there in this thread will help commanders such as myself who are literally out there and can easily move towards objects of interest and investigate further. As it is now, the only thing most of us have are vague hypothesis formed from poorly interpreted clues that may or may not lead to anything. Other leads and lines of inquiry are always appreciated.