Mars Themed Lists

I originally posted this on YTTH, but thought it could go up here now.

I have been thinking about converting up a mars themed list for some time and wanted some feedback on my musings.

1 Emperor’s Champion @ 140
Accept Any Challenge, No Matter The Odds

6 Sword Brethren Terminator Assault Squad @ 526
5 Lightning Claws, 1 TH/SS, Furious Charge
1 Land Raider Crusader
Smoke Launchers

1 Techmarine @ 399
Power Weapon, Servo-Harness, Frag Grenades, Storm Shield, Terminator Honors
1 Land Raider Crusader
Smoke Launchers

6 Sword Brethren Terminator Assault Squad @ 258
5 Lightning Claws, 1 TH/SS, Furious Charge

6 Crusader Squad @ 162
Meltagun
1 Rhino

6 Crusader Squad @ 162
Meltagun
1 Rhino

6 Crusader Squad @ 162
Meltagun
1 Rhino

1 Land Speeder @ 75
MM/HF

1 Land Speeder @ 75
MM/HF

1 Land Speeder @ 75
MM/HF

Total Roster Cost: 2000

I would convert a Techmarine to be the Emperor’s Chump, make the crusader squads skitarii type models and make the terminator size models praetorians. The speeders would be pretty effective, but I think some converted Thunderfire cannons as MM attack bikes would look even cooler.
ALTERNATIVELY, a vanilla space marine army:

1 Master of the Forge @ 115
Servo Harness; Power Sword

1 Master of the Forge @ 115
Servo Harness; Power Sword

1 Techmarine @ 85
Servo Harness; Combi-Flamer

1 Techmarine @ 85
Servo Harness; Combi-Flamer

9 Tactical Squad @ 245
Flamer; Missile Launcher
1 Sergeant
1 Razorback
Lascannon and TL Plasmagun

9 Tactical Squad @ 245
Flamer; Missile Launcher
1 Sergeant
1 Razorback
Lascannon and TL Plasmagun

9 Tactical Squad @ 245
Flamer; Missile Launcher
1 Sergeant
1 Razorback
Lascannon and TL Plasmagun

9 Tactical Squad @ 245
Flamer; Missile Launcher
1 Sergeant
1 Razorback
Lascannon and TL Plasmagun

2 Land Speeder Squadron @ 140
2 MM/2 HF

1 Land Speeder Squadron @ 90
HB/Typhoon

1 Land Speeder Squadron @ 90
HB/Typhoon

1 Thunderfire Cannon @ 100

1 Thunderfire Cannon @ 100

1 Thunderfire Cannon @ 100

Total Roster Cost: 2000

This one Marines would be Skitarii, no Praetorians, but I think a pretty huge amount of firepower in a list that is pretty themed.

Anyway, thoughts on both of the lists’ effectiveness and conversion input would be appreciated beforehand as this will be a pretty big undertaking.
Jimmy

Here was Stelek's take on how to make the TFC work:
http://yesthetruthhurts.com/2009/12/thunderfires-ho/
http://yesthetruthhurts.com/2009/04/build-request-techmarine-themed-army/