I'm more of a video guy, but if i were restricted to stills I'd probably take a 1DsIII (of course a 1DX if it were available). I like the 1D4 but I'd rather have an FF sensor.
Lenses - I love my primes, so picking a zoom is tough. But considering the 16-35mm f/2.8L II is the only zoom I kept out of the 4 I had at one point, I would have to pick that and probably the 50mm f/1.2L.
I shoot wide to medium-telephoto for the most part, so that would work if I HAD to. Now could I? I doubt it, too hard to leave the 85L behind, as well as the 35L.
Alternate combo: 24-70 and 100mm Macro L, You would have a great walkaround lens and the macro lens is a great multi-purpose lens.