As Hippy Pickles says.....pray for a good team!
I have only done SV about 5 times. My virgin run with FC, so all was good. My others? DF/DR. Hell on earth. We made them (barr one). Divine Seal was on constant circulation; trying to keep the maniac's alive!

Gear up and hope your team has too. SS is helpful in the 2nd Boss (I would reapply on tank with swiftcast when the wind was coming), and the final boss is a juggle of running, healing and esuna. If u have a caster DPS be sure to watch their de-buffs on the last boss...give them esuna hugs asap (yourself, tho, is always the priority).

I think its a full-on dungeon for healers, with lots for us to do. Even time now and then to DPS. I like it....but not when my team is suicidal