Choosing a camera Bag (and need help with camera equipment)

[James_EG]

I have looking at various camera bags over the last few weeks and have found a few that I really like (e.g. vanguard UP-rise 48, Booq python pack), but I'm not sure if they would fit the equipment I have and want to buy in the future, I want to buy one now that would contain all my future equipment so that I only need to buy one, right now I have the camera + grip, a 70-300mm sigma telephoto and 18-55mm kit lens, this hardly fits into my Crumpler Cupcake 7500, this is a list of the camera lenses I have/want to buy:

Canon EOS 60D + Battery grip
Canon 24-105mm f/4 L
Canon 17-40mm f/4 L
Tokina 11-16mm (the new version that's not released yet)
Canon 100-400mm f/4-5.6 L (not released yet, so not sure on its size, though probably similar to the previous one)
Canon 2x Telephoto extender
Canon external flash (not sure which one)
Manfrotto 055CXPRO3 tripod and ballhead
15" MacBook Pro Retina (will buy generation 2 next year when released )
Also various accessories such as an intervalometer, spare batteries/memory cards, filters, cleaning equipment etc. I also may have a Nikon FM2n 35mm film camera and a lens or two

So what kind of backpacks do you think would be good to hold this equipment? Also, do you think this is a good camera and lens set-up? I think I need to get a full frame camera like a 5D mk III (dream on!) to get the best out of the lenses, though it may be possible in a few years. I you have any other suggestions for me (lenses or accessories etc.) then please tell me. I don't really want to buy any prime lenses with a crop sensor camera...although, do you think I should be thinking about trying to buy the 50mm f/1.4?

Thanks, James