List for mini-turney

In a few days I'll be playing three games with a small group of friends in a mini-tournament. It will be 1500 points with no restrictions except no supeaheavies costing more than 500 points. The other armies will be AM/Inq, Ultramarines (bikes/gravguns), Necron (some flyers, lots of wraiths), Orks, and Salamanders (7-9 drop pods, LOTS of flamers/meltaguns).

I'm considering two lists:

Quote :

CAD:
Archon w. Webway Portal

5 Kabalite Warriors w. Blaster
-Venom w. Splinter Cannon
5 Kabalite Warriors w. Blaster
-Venom w. Splinter Cannon

5 Kabalite Trueborn w. 4 Blasters
-Raider w. Dark Lance

9 Reavers w. 3 Cluster Caltrops
-Arena Champion
Razorwing Jetfighter w. Dark Lances
Razorwing Jetfighter w. Dark Lances

Ravager w. 3 Dark Lances
Ravager w. 3 Dark Lances

Scalpel Squadron
5 Wracks w. Ossefactor
-Venom w. Splinter Cannon
5 Wracks w. Ossefactor
-Venom w. Splinter Cannon

Quote :

CAD:
Archon w. Webway Portal, Shadow Field, Haywire Grenades, Blaster

5 Kabalite Warriors w. Blaster
-Venom w. Splinter Cannon
5 Kabalite Warriors w. Blaster
-Venom w. Splinter Cannon
5 Kabalite Warriors w. Blaster
-Venom w. Splinter Cannon

5 Kabalite Trueborn w. 4 Blasters
-Raider w. Dark Lance, Night Shields

12 Reavers w. 4 Cluster Caltrops
-Arena Champion
Razorwing Jetfighter w. Dark Lances
Razorwing Jetfighter w. Dark Lances

Ravager w. 3 Dark Lances
Ravager w. 3 Dark Lances

I've only been playing list 2 so far, but I'm leaning heavily towards list 1, as I'm very concerned with the Salamanders list, and this will give me the option of null deployment should I be able to force him to take first turn, and I do not think he is even aware that other than SM might be able to pull that stunt.
My problem is that I don't really know what purpose the Wracks are supposed to have once deployed? The same as everything else (aka scuttle away from contact and let the venoms fill it with poison)?

Also, are Reavers worth it with just 3 caltrops? Or are the points better spend elsewhere? My primary reason to bring them to a tournament is to counter Invisibility, but I don't think that will be much of an issue here, but I still do like the rending and the immense speed of the unit.