Kuiu has a 30% off sale on their packs currently. Love my 6000, great modular system. Hauled lots of elk with it, their frame can handle 100lbs+ no problem. Would avoid the Badlands, I had a 2200, sold it for a 2800 when I was first getting serious about backpack hunting. Paired them with an army surplus nylon pack frame. Framepack was not particularly comfortable past about 75lbs. The Badlands pack can handle about 50 before it starts to get really deformed. I've packed 2 elk with mine, both cows, it took a lot of trips. I use my 2800 very rarely, rather smash down my 6000 for a daypack, it packs flat on the frame. Also lighter. Used better quality pack will do you just fine, most people sell them when they have a ton of life left.
Also, check the REI outlet if you are a member. Plenty of backpacking packs can handle that kind of weight, I used a Dana Bombpack for years as a daypack/ hauling pack (can handle about 60-70 lbs), and probably find a used one for $100 if you look abit.