Personally, I think you're relatively light on bodies but 3 carnosaurs will be fun to play with. I'd make one of the scar vet carnos your general because you're more likely to be using his command ability than the old blood. I'd also put the koatl's claw artefact on the scar vet, 6 attacks vs 3 is better to fish for mortals.
Without a starseer or a starpriest your saurus knights are going to have low damage and a predictable threat range. I'd consider dropping one of your carnosaurs and your CP for a starseer and starpriest. Or just drop the scar vet on the cold one (he's not very good in combat and the carnosaur already fulfills the battalion) and the CP for a starpriest. You really dont need the command point, you're getting 2 with your double battalions. You're also getting two extra artefacts because of the two battalions. Blade of realities is good on the old blood for rend 2 damage 4 attacks into enemy heroes, and then you can give your skink hero retrices to keep them alive.
All in all, I think it'll be a very fun way to get into the game. Knights can hit hard with the starpriest buff and carnos are great if you put them into the right targets. I think you could free the build up a bit by just leaning into one battalion or the other, but that's just me. Looking at what you have right now I think 1 scar vet on carno, the scar vet on cold one, and your CP are probably points you could move to other things. Chameleon skinks, for example, really help coalesced armies with a backfield threat. Bound geminids also helps give coalesced armies an edge in combat. I'd start with the skink buffing heroes but those two are also nice additions that can compliment a melee focused coalesced army.
If you're going for something relatively cheap to pick up and fun to play, I think this is a good start. Consider trying out lists on TTS before committing, but dinosaurs are always going to be fun
