[neferhet]

List can be ok. Just a thing: the sorceror is walking alone. And he is just going to die.
Also, seems pretty useless in this list. I'd rather do this:

HQ
Chaos Lord, Bike, Power Sword, VoTLW - 105

FAST ATTACK
Helldrake w/ baleflamer - 170
3 Bikers, meltagun - 80

HEAVY SUPPORT
Vindicator w/ siege shield and combi bolter - 135
Vindicator w/ siege shield and combi bolter - 135

TROOPS
A)
x10 chaos marines w/ VOTLW, close combat weapons, 2 meltas, and power sword - 205
B)
x5 chaos marines w/ VOTLW, plasmagun- 95

TRANSPORTS
Rhino A, dirge caster - 40
Rhino B- 35

TOTAL - 1000 pts

This way you have an Hq that might actually do something and get some bodyguards. Also, lots of marines for static firing is not so good and giving a shooty unit a melee weapon is not going to help you a lot.

If you are not going to swap the sorceror, then reduce the Squad B) to 5 marines with a plasmagun and buy the sorceror the burning brand of Skalathrax.
Imo, the 3 bikers should stay anyway. they are just so flexible!

 

[neferhet]

unless they can go towards my 1500 and 1850 lists

Oh well, at 1500 you definitely want some bikers or spawns. No waste there.

However, just dropping a plasmagun and 2 marines will make enough room for the sorceror to ride with the squad and to give him the burning brand of Skalathrax, some points to spare for an havoc launcher maybe?

 

[neferhet]

Can I take off the combi bolters or siege shields from the vindi's or do I need them on there?

combibolters are a 50% chance that any weapons destroyed result will spare your battlecannon...so they shoud stay. The siege shields are meh. do as you like with those.