Thanks for the feedback on my nuking set, I knew it needed a lot of work.
After reading the comments I know what improvements to make, I'm also going to work on 2 elemental staves since I also have a 99BLM, so it's a win/win situation.
As for the serpentes for healing, I'm 100% sure that having 1 pair will give a 2% cure potency, I'd have to check where I read that. If that's not the case, then yes, I'll be switching over to AF3+2.
The healing set I want to build for RDM is something like this:
Genbu shield will have at least 4% cure potency, that should put me at 50% according to the item set (It doesn't show the 13% from the sword yet probably due to just being released).