Trade up OR Stay Put?

If we can trade Ivory for a 4th or 5th then I'd have no problem trading up if guys like Carradine or Collins fall within range. At that point we are essentially giving up a pick we never had to start the draft and it'd be nice to secure a OLB with their ceiling.

And we can still take Faulk with our original pick.

say we got a 4th for ivory, would u trade OUR 2nd round picks and the jets 4th round pick to trade up for armstead? Leaving us with our 4th 5th and 6th rounders