Right, got a 3k (non-Apocalypse) game against a Tau/Grey Knight/Guard army next week, split evenly between Tau and Imperium.

Planned list is as follows:

Be'lakor
Typhus
Level 3 Sorceror of Nurgle

20 Zombies
20 Zombies
7 Plague Marines - Rhino, 2 Plasma, VotLW
7 Plague Marines - Rhino, 2 Plasma, VotLW
10 Marines - 2 Meltaguns, Aspiring champ with power weapon, VotLW
10 marines - 2 Plasma guns, Aspiring champ with power weapon, VotLW, meltabombs

Heldrake

Nurgleblit x3, VotLW
7 Havocs - VotLW, 4 Autocannons

Helbrute Mayhem Pack - all Multimelta/heavy flamer

The other option I'm considering is drop the two ten man squads and the Havocs, and take a big blob of Marines with the Icon of Vengeance and a Forgefiend. Or have a big marine blob plus the Havocs.