PoE Detonate Dead, DerpAtOffice builds

POB: These flasks is for mapping and for single target none of these really do much since I am indeed aliment capping on end game bosses like shaper and not aiming for ubers. Onslaught even kills my single target because it screws up the desecrate triggers. So I am wonder what do I even use for single target bosses. Since I am crit capping and have quick a lot of increase damage taken so even bottled faith is not that great either.

I got lucky and get 2 doctors from ritual and managed to upgrade my Bow and get corpse pact jewels and now I am free from skitterbot reservation. However I am not sure what I should be using now that I am here. I should be able to afford an reservation enchant but I do not really have sockets to spare anymore (or is the combustion setup even worth it?). Is Petrified Blood worth using in my case? I cant really make use of the low life spell damage nor do I think I really need the damage since I am not going for uber uber fights. But I am not sure what I should make use of the remaining reser