I think you could see 4 TE and 6 WR if they feel they can't afford to lose people, but do think its unlikely. I think 4 TE is almost set in stone. The one thing that might change that is something like a Hanna retirement.
But mostly right now I suspect it will be 5 WR, Dez, Williams, Beasley, Switzer, and Butler. The only question to me is do they think they need the sweep stuff with Lucky and how that could effect the lineup. I think Butler could be cut, but he's really the only backup X we have currently. We don't really have a backup Z, but I'm betting that could be Switzer in a pinch.