I really like running 1000 pts lists as well, however I'm training for the upcoming tournaments in the fall and all of them are 2k. There is one issue I think with 1k lists and that is that any form of recursion is really strong, so summoning and resurrection really gets brutal in small games. When I play 1k with my maggotkin I am basically playing 1500 pts vs 1000 pts. That difference is more balanced when you play at 2k. I do prefer the small games because they are faster and don't involve as many dice rolls. 
By the way I like your list! Let us know how it goes. Facing a shooting army will be really tough for your Vampire Lords I think.
By the way I like your list! Let us know how it goes. Facing a shooting army will be really tough for your Vampire Lords I think.