[DaisyDuke]

How about swap the ferrus for a normal brute then use the hellbrute data slate. Freeing up your elites slots for some deep strike Terminaters or lone mutilater back line fun. If you take neffs option and go for a defence line, you could add a coms and make sure your reserves come in when you want.
I have used this tactic to great success on many an occasion. Opponents normally have to do something about 3 dreads coming down with the access to shoot rear armour with a multi melta, or plasma cannon the wrong side of their cover.