Just did a 5-man with all 4 NMs. Could have gone better, but it wasn't too bad.
MNK THF RDM BRD BLU.
Killed 2 rooms of fomors, then had the BLU supertank the fomors. He died while we were finishing the third fomor, because Aegis Schism landed and the RDM couldn't get Erase off in time. Minor oversight, didn't slow us down too much.
Just a little tip though, the RNGs ranged hits hit for huge amounts, kill that first, then the RDMs if you're super tanking. Dispel wasn't nearly as much of a threat as this. Diamondhide overwrites itself so he could just recast it every time it was up. When it wasn't up, he was being hit for 4-16, which while not ideal, worked for us. With another piece of gear or two he would have been fine.
Anyway, 1F took is something like 29min, and then 2F was pretty quick with Batardeau (another couple months to Mandau

) and a very well geared MNK. Helped that I had STR DEX AGI and CHR all unlocked for some killer DEs. We had the BRD pulling. I never realized how much Dispel helped on these fomor, apparently they all had protect up. I shoulda figured as much but *shrug*. I think that was a total of about 23min or so.
3F was very quick with the gears, having Head Butt for Restoral and Artificial Gravity, and 1500~2000 damage shark bites (why does Shark Bite work so much better than Dancing Edge on these, even at 100% TP?). The stationary Rampart took about 4 minutes with Hundred Fists.
We had something like 22-23min left for Citadel floor, and I would recommend using THF for this pull. I had no idea that with a simple Fanatic's Drink and Perfect Dodge, I could run in there, PD once I started getting hit, gather up the room, use Fanatic's, run the gears back the other way a little, then flee out and completely lose aggro. Gonna use that every run from now on since previously I'd log out after collecting the room up, wasting time to log back in and it'd clear my buffs.
Killed Citadel with about 1min left, no drops throughout the run.

Could do this easily with MNK MNK BRD RDM, but I see no point without a THF. Would have been a little short on time without the BLU I think though, today. :/