I would say that if you are decided on a slann then that list is probably a good all-round list even though I would without a doubt swap 1 unit of skinks (and an extra 2 points from somewhere else) and get a 6 strong unit of chameleons. For the time when you face warmachines chameleons are your best unit and for the other times they are just good and will effect your opponent alot.
I would also sugest making the Scar-vet the batle standard bearer and ad something like the flame-banner on him. he will be quiet voulnerable but he will give a great boost to the entire army and especially the unit he is in. Flaming attacks on at least 1 unit is the way to go.
Another list that i have had great fun playing is:
Scar-Vet, Burning blade of Chotec, Light armour, Shield
Priest, Extra level, Plaque of Tepok
28x Saurus, Spears+Shield with Standard and Musician
10x Skink skirmishers, Blowpipes
10x Skink skirmishers, Blowpipes
6x Chameleons
5x Chameleons
Stegadon (regular)
Salamander, Extra handler
Salamander, Extra handler
This list comes down to 1250 points and lets you play alot of different units which I enjoy and might be a nice break from the classical 2-3 units of infantry guarding the slann.
Here you get 1 big block and a steg to back them upp. Its quiet hard not to be flanked with such an army but it is in my opinion fun to play.