After some tinkering I'm pretty set on:
Traits
-Purity above all (may upgrade veteran sergeants to apothecaries)
-Trust your battle brothers (may buy true grit and counter assault for some units)
-We Stand Alone (no allies)
-Eye to Eye (limited fast attack stuff)
H.Q.
_Codicier 135
__Veil of Time
__Terminator Armour
_Terminator Command Squad 215
__4 Termis
__2 Assault Cannons
__Tank Hunters
The termis role is the same as before, only this time they’ll have the libby tagging along. I would have liked to upgrade the Libby to Epistolery and take fear of darkness, but there just weren’t enough points.
Elites
_Veteran Squad 310
__10 Marines
__True Grit
__Furious Charge
__Drop Pod
__Power Weapon
___Veteran Sergeant
___Power Weapon
___Apothecary
___Teleport Homer
Not quite the combat monster they were in the last list, this unit is basically included for a fluff/theme perspective. They’re still basically the combat hammer of the army
_Dreadnought 165
__Lascannon
__Missile Launcher
__Drop Pod
_Dreadnought 165
__Lascannon
__Missile Launcher
__Drop Pod
Able to fire on the turn they arrive these should hopefully dish out the majority of my anti tank firepower.
Troops
_Tactical Squad 255
__10 Marines
__True Grit
__Drop Pod
__Meltagun
__Veteran Sergeant
___Powerfist
___Teleport Homer
_Tactical Squad 255
__10 Marines
__True Grit
__Drop Pod
__Meltagun
__Veteran Sergeant
___Powerfist
___Teleport Homer
There's still some room for tinkering but I took the plunge today and ordered 5 Drop Pods. With Xmas today and my birthday on Sunday I tend to have an influx of cash this time of year and have premptivley blown it on resin pods this year

Aside from the pods, I reckon I need to build and paint:
-5 (10 in total) more marines for my tac squads. (1 with meltagun to replace the plasmagunner that's already in there for standard games). These will each get closecombat weapons to show true grit. I reckon if half the unit is armed with CCW and bolters it should be pretty clear they have the ability.
-4 termis (will get some toga/khitons added. Segreant may get a sealance (although I'm using the commander culn model so I may just gladius up his sword a bit)
-termi librarien - not going to convert this. I'll just use the really nice new termi libby model.
-4 more true grit vets
Hopefully I'll get the remainder of the standard army (2 vet squads and a libby) painted by new year so I can go on to painting this alternate list asap
Thanks
Corai