Carrying Everything ?!

I'm shortly going to be starting a job overseas which requires a lot of intra-EU shuttle flights home, probably by Ryanair (actually the most convenient as well as the cheapest). I will be travelling with the camera for various reasons. Their cabin baggage limits are 60x40x20, one item, 10kg.

Assuming I can get round the 10kg by being persuasive, does anyone have any ideas for a single bag in which I could carry the following:

• 300/4 with TC-14EII
• 70-200/4
• 24-120/4
• 10-24 DX
• 28/1.8
• 85/1.8
• 2x SB700 (could probably put in hold luggage or make do with only one)
  
• D7K+grip
• Second D7K (to turn into a D600 sometime in the year)
• Filters/Triggers/Cards/Batteries/Cables (hold luggage?)
  
• 17" laptop (this is the real issue; it's too large for a lot of the bags, but I'm hesitant to change it since it has a really good (large, sharp, clear, correctly-coloured screen), as well as needing to carry a decently powerful laptop for work)

I currently have a Lowepro Flipside 400AW, but that has no space for any computer (well, anything bigger than a tablet, at least). I'm tempted by the Thinktank Airport International, but rather scared of the price and the 4kg empty weight - does anyone have any alternatives/experiences with Ryanair?