So, I am about to git lvl 80 any moment on my priest now, and I'm very excited to finally be there. I was wondering what addons should i get?
Currently I have Carbonite map and minimap, Quartz castbar, DBM. I would like a simple and nice GUI mod maybe? I've seen many good looking ones on youtube videos, also seems like ELVui is big. Heard Bartender is good too.
Then, What would I need for raiding? I heard a grid addon and a healing addon or something like that?
I play to play disc/holy priest, and it's a little hard to manage on the party list on the left side right now...
Take some time to work out what information is valuable to you and how the AddOn can be configured.
Since you already have a Castbar and BossMod, there's nothing to change.
You can use Bartender for more advanced ActionBars but you can stay with the default ones, too.
Regarding complete UI replacements like ElvUI:
I'm not a big fan of it but you have to decide for your own.
If you like the overall style of it, you can use it.
Otherwise you might prefer using specific AddOns.
Regarding to overall UI positioning:
You shoudl prefer a centric layout with the RaidFrames in the lower half, as seen in the screenshots below: