Possible 1500pt Subterranian Nid list

[Commisar "General" Dr Phillips]

So ever since I picked up playing nids in an attempt to draw my father back into the game I have loved the idea of digging bugs and worms ... might be the Krieg in me but oh well, I have thought of a list involving 54 Rippers (somewhere around 800 pts) 2, 9 man Ravener bases (200 some points) a Tyranid Prime or Parasite of Mortrex with Gargoyle or Shrieks for screening purposes and either trygons or biovores for support with my remaining points. Lictors might also provide a nice distraction while I move up the main army, thoughts?

-Commissar General Dr. Phillips