I have the steelers D vs the pats and i have the giants D vs the cowboys so im staring the gaints..good idea?

i dropped the packers d cuz they gota bye s im picking thm back up after this week, and 1 of my WR might not play so i might have to start dez bryant but im starting the giants d orshould i just start he steelers on sunday night? or should i just drop dez this week pick him up next wekk 4 mike williams who is predicted to get 13 vs the panthers?