Looking for backpack recommendations for my AT thru hike. I went to REI because I was having trouble adjusting my old aura 50. They couldn't get that one, or really any other pack to sit properly on my shoulders without gaps. The closest we got was with the newer aura and with a deuter aircontact. Also on all packs I was a small size for the back, but the shoulder straps were as short as they could go which may be problematic as my body changes on a thru hike. I'm 5'3", slim, short torso with wide hips. Any suggestions?