Question on kitbashes

Hey guys, i'm going to recently try to kitbash some transformers to create my Heavy Metal War team.
http://www.seibertron.com/heavymetalwar/team_view.php?id=6525
This is what I was thinking:
Bloodlust - Armada Thundercracker or Starscream repainted in black/red color scheme with different head.
Ground Pounder - Either a G1 Brawl or a 2007 Brawl repainted in a bright yellow with added weaponry
Vehemence - Either a Blast Off or Astrotrain with a different head repainted a dark blue
Backstabber - some seeker, not decided yet
Panzerfaust - Galvatron body, new head, more weapons painted haze grey
Anaphylactic Shock - Some form of ratchet with new head and different weaponry painted green with red crosses
Dark Curse - another seeker - unknown body type, painted haze grey with lots of scars
Phantasm - another seeker, painted light green
Evisceration - Repainted Soundwave with some minor weapon adjustments
Crazy Eyes - ughhh somekind of weapon, perhaps shockwave?
Tetracycline - Energon strongarm repainted white
Sienar - TIE Interceptor transformer with some modifications
The ones with the unknowns are really fly by wire.
It's an ambitious schedule and may take me a little bit depending on funds and wife permission.
Any ideas or tips would be great (especially on swappping heads/adding weapons).
PS I've never kitbashed before so really any hints would be great!!!
http://www.seibertron.com/heavymetalwar/team_view.php?id=6525
This is what I was thinking:
Bloodlust - Armada Thundercracker or Starscream repainted in black/red color scheme with different head.
Ground Pounder - Either a G1 Brawl or a 2007 Brawl repainted in a bright yellow with added weaponry
Vehemence - Either a Blast Off or Astrotrain with a different head repainted a dark blue
Backstabber - some seeker, not decided yet
Panzerfaust - Galvatron body, new head, more weapons painted haze grey
Anaphylactic Shock - Some form of ratchet with new head and different weaponry painted green with red crosses
Dark Curse - another seeker - unknown body type, painted haze grey with lots of scars
Phantasm - another seeker, painted light green
Evisceration - Repainted Soundwave with some minor weapon adjustments
Crazy Eyes - ughhh somekind of weapon, perhaps shockwave?
Tetracycline - Energon strongarm repainted white
Sienar - TIE Interceptor transformer with some modifications
The ones with the unknowns are really fly by wire.
It's an ambitious schedule and may take me a little bit depending on funds and wife permission.
Any ideas or tips would be great (especially on swappping heads/adding weapons).
PS I've never kitbashed before so really any hints would be great!!!