I have always just been a day hiker and wanted to upgrade my pack as I plan to do the Long Trail this summer. I just got the 2018 Osprey Aura 50 and I hate it! The hip belt cuts into my hips and I can't get the shoulder straps to adjust properly. I have watched endless videos and nothing is working. I think it just doesn't fit my body properly, I have wide hips and a long torso for my height. I am going to return it, but now I don't know what to do. Can someone suggest a lightweight pack that will be comfortable in the summer heat and in the rain in Vermont? I was looking at the zpack arc blast since I really like the idea of having air flow as I sweat a lot and will be hiking mostly in July and August. However, I am really nervous about ordering such an expensive pack without being able to try it on. Any suggestions will be greatly appreciated. If it matters my base weight - minus the back - is currently 11.5 lbs.