World of Warcraft pve or pvp question?

I am currently on holiday and i get back home in 5 days. Once i am home i want to either do pvp or pve and not both becuase i dont have the time, My priest is level 80 named Kawaiilol on the server Dreadmaul, I am in the best pve guild on the server and Have 741 resilience, So both my pve and pvp gear is very good. I have work during the day and get home about 5 I get from about 8-12 to play.. and cant decide which takes more time, WoW isnt a big part of my life and i dont plan for it to be, should i do pvp or pve?