Yeah, SMN unlock only grants Ifrit-Egi. The other Egis presumably require you to reach that respective part of the storyline (or further job quests, who knows). The implication here is that upon first unlocking SMN, your Summon1 is still going to be Emerald Carby, your Summon2 is still going to be Topaz Carbuncle. It's kind of explained in the SMN unlock quest.
Friend said something that conflicts with everywhere else I've been. Is Dragoon still Lancer30/Pugilist15, or is it now Lancer/Marauder?
I basically just ruined the healer's shit asap while dodging all of the AOE attacks. The charge-up AOE is probably the biggest source of damage. So healer then the lancer and/or THM (iirc) then the MRD and finally the main guy. Don't use your own AOE, better to focus down one. Use all of your abilities, I guess? I burned every defensive CD I had, used Fists of earth, and just did my best. I died at least twice, but that was mostly getting caught by AOE and not focusing the right targets.