Cold Blooded 5 is passed 52% of the time, 77% with a BSB.
With a LD8 general, it's 89%.
If you want to cloud, you should be able to get most within range of either the general or the BSB, making a rally pretty easy (77% to 89%).
I'd go with 0-2 scarvet/oldblood on coldones.
0-5 on razordons, and 0-3 on salamanders is a good idea.
As important as the restrictions is a FAQ.
1) Do Predatory Fighter Attacks generate bonus attacks from the 2nd rank?
2) Does the Kroxigors Predatory fighter force the cohort to pursue?
3) Does the engine of the gods Burning Alignment hit ALL units in range, or ALL units in the front arc that are not in close combat?
4) Ark of Sotek special attack in the shooting phase hit ALL units in range, or ALL units in range, in the front arc, that are not in close combat?
5) The cohort rule says the models touching a Skink may attack the krox behind him. If an opponent isn't touching a "Skink" (which is the models in a cohort) but instead touching an attached character, can you still swing on the Kroxigor?
6) Can a Chief on a Ripperdactyl place a bloat toad? Does his Ripper benefit from Bloat Toads placed by other units?
7) Can a chief on a Ripper or Terradon join units of ripperdactyls or terradons?
8) If a Carnisaur does a wound at initiative 2, it immediately gains frenzy (blood frenzy rule). Does it make that extra attack now?
9) Is there any way to make Chakax, Ocyotl and Troglodons not suck?
Special Characters:
10) Does Kroak's spell hit ALL enemy units in range, or ALL enemy units in range, in arc, and not in combat?
11) Can Tictaq'to join units of terradons?