AoS Big Game 2500 point help

[Hutch9935]

Hey guys
So I've got a BIG game coming up. its going to be 10,000 points of death versus 10,000 points of everything else. Death will be made up of two 5,000 point lists and the rest of us will be using a mix of order, destruction and possibly chaos with 2500 points each between four players. I already posted something similar about this but i now have an idea of what we'll be up against and its not looking good. At their disposal, among other things the Death team will be fielding Nagash, all three death lords, a morngul, probably some morghast archai, blood knights, terrorgeists, crypt flayers and horrors. Basically all the most powerful undead things and a shed load of zombies to boot. We've been told to expect at least 100 of them backed up by a corpse cart. Nothing is certain yet but anything can happen. I have a 2000 point list from a previous anti death list and i need help with the other 500 points. so far my list shapes up as

Leaders
Skink Chief - 60 points
Golden Sickle and Star-buckler
Command trait: Undecided
Relic: Undecided

Skink Starpriest - 100 points
Relic: Undecided

Battleline
Skinks x 30 - 240 points
Boltspitters and Star-bucklers

Skinks x 10 - 80 points
Boltspitters and Star-bucklers

Skinks x 10 - 80 points
Boltspitters and Star-bucklers

Behemoths
Bastiladon - 300 points
Solar Engine

Stegadon - 260 points
Skystreak Bow

Troglodon - 200 points

Other Units
Chameleon Skinks x 5 - 120 points

Kroxigors x 3 - 180 points

Ripperdactyls/Terradons x3 - 140 points
Battalions
Thunderquake Starhost - 120 points
Shadowstrike Starhost - 120 points

I cant decide between ripperdactyls or terradons with the bolas.
Any CC is greatly appreciated. Let me know what you guys think I should put the other 500 points into

 

[Bowser]

For this one I would go with rippers, you are only going to have one shot, so I would go for the kill. I would put in 10 more chameleons and a Scar-vet on carno. Or add to the rippers, scar-vet on carno and a priest or Scar-Veteran on Cold One.

 

[Hutch9935]

Brilliant thanks for the advice. Probably going to go for the 10 Chameleons an Scar vet on Carnosaur. Will it be best to being in the Chameleons on all 15 at once in a suicide assination squad or bring them in in groups of 5 at different times or is that something to decide on the day? Also what command trait should I take for my skink chief and what artefacts for him and the Starpriest?

 

[Bowser]

Master of Defense give each a phoenix stone

 

[Hutch9935]

Master of Defense give each a phoenix stone

Will give it a shot, thanks!

 

[Seraphage]

Against all those skellies Bastiladon with Snakes is the way to go ! Just imagine how many attacks it will make with so many models around