Level 12 priest - what spec?

[Ieatsqirrels]

I have a level 12 priest that I started to twink in DF and then stopped. Should she heal, and if so, disc or holy?

 

[Eleven]

Holy accordingto this.
https://sites.google.com/view/betis10stwinkguide/classes?authuser=0
And 12 is apparently a sweet spot.

 

[Ieatsqirrels]

Thanks!