International travel backpack

[shutterbug883]

Hey forum members,

I'm gearing up for an international trip and in need of some advice on a new backpack camera bag. Currently rocking a Kata, but I'm running out of space. Planning to carry my DSLR with a 105 mm lens attached, two extra lenses, a flash, and my laptop.

Since I'll be chaperoning a university trip, I need something easy to carry. Any recommendations that won't break the bank? Looking to stay under $300 – gotta stick to that teacher salary budget.

Thanks in advance for your help!