I need help with making my first level 60. Priest or Mage ?

I'm a casual player. I cant play 10+ hours a day anymore like 12 years ago. I have a family and busy job.
I've always enjoyed the caster class more. Ive been a warlock but i want to roll priest or mage now.
I will play PVE mostly but I also like world pvp and battlegrounds.
I like to heal but i also like to dps.
Mage seems nice because of free drinks/food and portals.

What class should i choose ?