No worries with the backpack, just refrain from hanging magazine pouches, Major Leage Infidel patches, etc. off of it.
Also, go with a plain tan color rather than multicam or ACU...it camouflages at least as well and doesn't raise alarm bells.
I have never been a fan of Kelty products...I have destroyed several of their products simply backpacking and going to school. I don't have any faith they will hold up in combat. It isn't the 'extreme' nature of anything so much as the omnipresent dust that destroys lightweight zippers and the fact that you will often have your pack stuffed full of heavy things like magazines banging against other ammo cans...lightweight nylon will quickly abrade and rip. Any money you save by going cheap on a backpack now will be wasted when it shits the bed halfway through your fist deployment.
For what you will likely use it for I highly recommend:
Diamondback Tactical SOF Assault Pack with Side Pouch Flaps - Diamondback Tactical ? U.S. manufacturer of tactical gear, ballistic body armor, plates and protective apparel
With the added laptop sleeve.
Don't be scared by the price, they usually pull about 50% off or greater for soldiers.
I have their 3 day Assault pack and have been using it nonstop for 5 years now...still going strong and couldn't be happier with the basic functionality of design and unbelievable toughness.
The pack I linked is probably a good fit for you...it has more room for books and a computer (which you will be tied to very closely, even in combat)....Enjoy.
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