So I finally got to test my list out after a few minor tweaks here and there ...
HQ 100Librarian, 100 pts (The Sanguine Sword, Shield of Sanguinius, Power Armour))
Elites 355Sanguinary Priest 75 pts (Power armour/Combi-melta/Lightning Claw)
2x Furioso Dreadnought 140 pts (Blood Talons, Meltagun, Stormbolter, Extra Armour)
Troops 7553x 5 Assault Squad, 175 pts (Remove Jump Packs, Meltagun)
3x Razorback (Twin-linked Plasma Gun, Lascannon, Hunter Killer Missile)
1x 6 Death Company 230 pts (2 Power Weapons, 1 Power Fist)
1x Razorback (Twin Linked Heavy Flamer)
Fast Attack 2902x Baal Predators 145 pts (Twin Linked Assault Cannon, Heavy Bolters)
Total: 1500This list has fared well over six games that I've played. I decided to add the DC as I wanted to scoot something forward and target those dev squads or other backfield annoyances quickly. I was afraid they might end up being dragged all over the table but really with good deployment and by using the rest of your force wisely you can mitigate that entirely. They pretty much made their points back every game. I would have used one DC dread but I don't have one painted!
I think i prefer these mech builds over DoA. I now have Sanguinor, Dante, a jump RaS squad and a Sang Guard squad beautifully painted sitting on the shelf.