It's like sorcerer hybrid, coz you focus more on attacks, but at the same time a lil bit of healing. But a slow death of course.
Renovatio + Highness Heal every 20 sec. Which can heal a massive amount. Also help heal 2 others. On self? Why not?
And Renovatio to cover some DOT Heal. If priest too busy.
Blessing Level 1? Well, there are likely a hybrid or FS priest beside you. Which are likely to have max blessing. Max ress? Why not. There's always death here and there. :P
Oh, one thing that you need to sacrifice is, getting tokens and weapons in dungeons/raids. So go colo more often. Give a chance for Priest Healers to get eq/tokens, especially FS. I bet you can get your points easy in colo. So why not? :P You would only suffer in AOD though. xD