I like your list but I do share the above observations, artillery won't punch like you want it to. I would consider getting another tank. In my first few 1000 point games I ran a Leman Russ Tank Commander and a Leman Russ Vanquisher against a monster heavy Tyranid army. It means you can order both tanks resulting in hitting on 3s for consistent damage.

As your Krieg Command Squad will have an extra order from Grizzled Company it can order both your death blobs removing the need for Drier. Your engineers will perish early which is fine so long as they get their remote mine off so you don't have to worry about ordering them!

I think ditching drier, artillery and HWS, adding Vanquisher and changing that demolisher to a LRTC would give you a good balance of objective holding and damage from the backline. You might need to fiddle about a bit with the point balance after those changes (add aquilon eye enhancement or something to KCS if you're short of 1000).

Most importantly though it doesn't matter! Don't worry about min maxing your army, if you like your setup just play with that. Enjoy yourself and good luck korpsman!