My advice, Your pack should be the last thing you buy. find your other gear first,
pare down your clothing to what you need, find your cooking and sleeping and shelter
style, get your gear together, then buy a pack.

Better, yet, do all that and *rent* a stock REI one for a few trips. Then see how much
what you really like to carry and use weighs, then you can pick a pack that's right for the load you are carrying, while adding minimal load to yourself.

Personally, I find pockets mostly useless. I use little light stuffsacks or ziplocs inside
one big compartment.