I plan on selling the leftovers on craigslist, but is there anything worth keeping around?
Don't get rid of anything just yet. Listen to the experts on the forum and get your pool cleared up. It's okay to use the various forms of shock that you listed as long as you know what they add to the pool. For example, I'm pretty sure that the 5 bags of Shock Max Blue that you have is dichlor. Using Poolmath, in your 40K gallon pool, adding 5 bags of this will raise your FC by 8.3 and your CYA by 7.6. So, after the SLAM is over and it's time to raise up your CYA level, you can use this shock to kill two birds with one stone. But, you have to read through Pool School, learn to use Pool Math and understand the effect that each chemical has on your pool. I agree with faby3003 to get rid of the algicides. Good luck clearing up your swamp. The forum loves to watch these threads.