When I deployed I bought a ACU camelbak BFM, its seen better days I would use it to shoot over and I accidentally didn't realize that my muzzle wasn't past it so it has a few problems with it...But I use it all the time as a carry on when I travel or back pack to the gym...
I realize you already bought something but check out this website
Kifaru, International ...
If I deploy again I am going to buy a ruck from them....
A few essentials I bought from them is their woobie comes in super handy, there sleeping bag (super warm and packs up really small)...and one of there best products is the lock n load pouches...makes all you crap super organized and keeps the dust and bugs out of what ever you decide to store in them...
Some of their rucks they make custom for you, depending on your body type, and you can customize the hell outta them