I play basically the same, except I have warfare instead of necro
Utilizing big massive shield, greatly enhances my survivability while my pet rains destruction amongst my enemies (especially with shield up+soulmate+rallying cry we are basically unkillable) and as opposed to necro, i have lot more CC after incarnate destroys their armor (battlestomp+battering ram). And damage of bouncing shield is better than mosquitos too imo, and I dont have to bother with INT at all.
I just use rain of blood for setup, as I of course almost exclusively use blood incarnate.
Also adrenaline from scoundrel helps with first round, allowing you to summon and buff everything you need.
Only improvement I can ever think of would be playing as elf - utilizing flesh sacrifice for 1 extra ap at turn 1 (which is where you setup your pet) AND it gives you free pool of blood for summoning
Definitely reccomended, most fun you can have with your pants on imo.