What to do with two Battleforces ?

Basically what's in the title.

Through postal shenanigans, I got my hand on two Battleforces (and GW paid back the one that had been seemingly lost in transit only to pop at my door unexpected yesterday !).

I'm a little confused because I never expected to get my hands on 40 Ardboyz, 6 Ragerz, 6 Werdbrutes and two Biggus Piggus. And thus I don't know if I want to keep two boxes or not. Do the two of them form a good basis for an Ironjawz army or is it too much repeat ?