Hmm, that's a pretty good idea. Usually i build up 9 CP (4 with anticipation of course) and the 1st i'd redirect, RS, 5pt evis 5pt evis. 2nd i'd KS, 3rd i'd AR, 4th i'm screwed. With better gear now i could probably use nothing on the first and push the rest back one each. the BF thing would definitely help, the first few, but after maybe 3ish you wont have enough time to get 5 more CP each time. however sub with no work rips right through them. My damage -on- elegon himself though was noticeably lower.
Well on 3, redirect the boss with your remaining cp, shs back to him, and you can still make 5 to hit it with a buffed bf'd evis, then use cd's after that. You can split up sb and ar if you need to so that you have more cd's to pop each time. But didn't you say you were only killing 5 and not able to kill the 6th? Assuming that isn't just because your mob was reaching, you would then only have to plan for 5. Last two would be KS and ar/sb. So I don't see why you would be worried that after the 3rd set you wouldn't have enough time to get 5cp on elegon again as 4 and 5 would be your big cd's.