You should go get to lvl 20, pvp is more fun from there on a necro imo. Before that its just boring petspam😔
Put 5 in nightfall - brutal death and start to fill the 5 next in corrupted soul.(That gives you nice heals from lifestrike) At lvl 20 get despoil the soul. Keep one petpoint at this stage for the fear.
In other words, at lvl 20 use the ability despoil the soul x7 and go with one pet just for the fear.
Good luck and have fun👌🏻