I decided to re-spec the Priest again. She will go back to Disc/Holy. I will try to get her to crank out as much holy damage as possible to make questing doable, we will see. I shall report on it.
I just want her to be able to heal SP/UB/MT and all that stuff without having to worry about maybe being in a sub-optimal spec. Her DPS in Shadow is not that great compared to regular DPS same- and 1/2- levels below. I can only crank out so many Mind Blasts, Mind Flays, SW-P and SW-Ds, and it is still subpar. The only reason why I could justify it is for solo-questing. Will see how bad Disc/Holy does.