Playing with FW models
Abaddon (warlord - in spartan)
10 CSM, 2x Melta, Power Axe Champion, Gift of Mutation, VotLW, Rhino, Dirge Casters
10 Cultists (in bastion)
10 Cultists (in reserve)
Fast Attack: 410
2x Hell Blade, Helstorm Autocannons
5 Chaos Spawn, MoN (in spartan)
Heavy Support: 765
2x Fire Raptors, Reaper Batteries, Balefire Incendiary Missiles, Warpflame Gargoyles
Spartan Assault Tank, 2x Quad Lascannons, Reaper Autocannon, Extra Armour, Armoured Ceramite
Bastion, Comms Relay
The list is a little light on troops - I confess - but it is very strong on dakka. It has AA, AT, AI and a beatstick cc squad in Abaddon and Spawn.
The only way I see of giving up first blood is the rhino - and that can come from reserve or be hidden well. Turn two can get very messy for my opponent.