Congratulations! And congratulations on making it through, that took me weeks.
I kicked and screamed and refused to change my ways until I'd had enough of not having "all alts heal person X" button. Now I have those set to numpad 1-5 and a self-chain-heal on numpad6. That fight has never caused problems since then.
Then the big boss? Loken? Man I beat him for the first time yesterday, and I've been doing this a while. It was just a matter of being able to withstand the novas. I'm glad to hear you got it on your first night, though.