I pre sorted the mods with BOSS, then sort them again with my fomm, started FNVedit 3015, created a merged patch. No errors or incompatibility occured.

Now when I start a new game with FOMM or NVSE, both item sets from CARAVAN and TRIBAL Pack will be loaded though I clearly unchecked them!

god knows what others unchecked mods will be loaded, if those 2 are [censored] up already

My load order:
as you can see, there are a lot of inactive mods that arendt supposed to be loaded, I hope someone finds the bug or can tell me what I did wrong, or I have to delete all inactive...

FalloutNV.esm
DeadMoney.esm
IWR.esm
IWS-Core.esm
Tales from the Burning Sands.esm
AWorldOfPain(Preview)LowLoot.esm
Community Bugfix Compilation Patch.esp
DarNifiedUINV.esp
IWR - Rebuilt.esp
Readius_NV.esp
Existence2.0.esp
CONELRAD 640-1240.esp
Casino Exchange All.esp
CompanionDe-Equip.esp
IWS-AS-LowSpawns.esp
populatedcasino-medium.esp
LFox Missing Ammo Recipes.esp
T3T_MiscItemIconsNV.esp
Realistic Death & Dismemberment Physics.esp
Interior Lighting Overhaul-Realistic Interiors-Full.esp
WeaponModsixpanded.esp
Sideburns.esp
Food 'n Drink + barter v1.1.esp
New Vegas Strip CLEAN - NO GATES.esp
ACF Brighter Days and Darker Nights v5 - Medium .esp
Lighten UP, New Vegas.esp
Arwen_NV_Realism_Core.esp
Arwen_NV_Hard-Core.esp
WMX-Arwen_NV_Realism.esp
NCR Rearmament v1.5 (Lore).esp
01032011.esp

Total active plugins: 31
Total plugins: 43

That is Steam's doing. It will automatically activate any pre-order packs associated with your account even if you don't want them active.

Just delete or move the .NAM files, they're in your data folder with the .esm.

Or if you want the DLC items without the cheat of getting them at chargen, try http://www.newvegasnexus.com/downloads/file.php?id=39776.