Thanks everybody! You all have given me some great ideas! What about packs that are in my budget, anyone have any ideas?
Check into a secondhand sporting goods store, or craigslist, ebay etc. You can get great deals on an older pack with some dirt on it. I would look for a 5000-6000 cubic inch pack from any reputable backpack manufacturer. Do your best to try before you buy. Occasionally steepandcheap.com will have packs from ALPS mountain gear, but you have to get lucky. ALPS makes inexpensive, but still high-quality gear.