One option, if Dte is out or late, is to take Reywind into 3BC and finish up that for him. We can split the group into 8's and 9's there, as long as a couple are willing to hold, with one group running 6's and 7's outside of any chains. We can regroup later and decide what we do.
I wouldn't want to start a chain (especially one with a history of bugginess like Delera's) with 1 person out, much less two. There's enough random level 6 and 7 content to run instead.
Another option is running a Heroic raid on our regular L25's. VoN maybe, or another DQ. This of course depends on whether any new guildies are joining us or not.