Im running almost the same thing. Im went Cleric>Cleric>Bokor>Bokor and Ive been able to grind/solo everything. I focused on Int as my primary, Con/Spr as my secondary. I intended to max our Spr first tho.
So I believe that your build can absolutely do that, but Im personally not a big fan of P. Doctor. I think Kabbalist gives you an easier time solo-ing.
Thats what I would max for Kabbalist, The other skills seem a bit lack luster.
Revenged Sevenfold and Ein Sof would be my focus. R7fold should help you with the lack of damaged. Ein Sof’s attribute will help w/ your mana.
I have kind of a weird build, Im level 85 and have 40 Con, 65 Int, 55 Spr
cause Im focusing damage w/ heals but late game I plan on focus Spr.
Ive tanked stuff for my friends so they can catch up, dungeons are super easy since your team can help you build a zombie army. I usually sit back and heal and let my zombies do all my combat.