I have the Streetwalker Harddrive backpack which I believe is close to the same size. I think the Pro is maybe an inch or so shorter. But I'm certain the Streetwalker Pro would fit what you're asking about. You can also check out: http://www.cambags.com/
and click on backpacks....ThinkTank...and the Streetwalker Pro. In my Streetwalker Harddrive right now, I have the 200mm f2 mounted on my 1d4, hood reversed, 16-35, 70-200 f2.8, 50L, 1.4x and 2.0x extenders, 580EX, and a bunch of misc other stuff.
Cameras: 1DX, 1D4, 20D, 10D, S90, G2
Lenses: Canon 10-22mm, 16-35mm f2.8L II, 24-70mm f2.8L, 70-200mm f2.8L IS, 300mm f2.8L IS, 200mm f2L IS, 50mm f1.4, 50mm f1.2L, 85mm f1.2L, 1.4x TC, 2x TC, 500D macro, Zeiss 21mm
Lighting: 580EX, Elinchrom 600 RX's, D-Lite 4's, ABR800, 74" Eli Octa, 100cm/70cm DOs, Photoflex Medium Octa and reflectors, PW's, Lastolite Hilite, Newton Di400CR bracket