I may try and go Sunday. Saturday is more instruction with shooting, Sunday is more shooting, with support on technique.
Appleseed - How to Prepare for an Event
I would say definetly bring a tarp, water, bug spray. The list they have should cover you. They did feed us at Harvard.
SKS would be fun for day 2. Do day one with a .22lr. Question for you, as I am unfamiliar with SKS. How fast can you reload yours with the 10 round stripper clips? Read below about the course of fire.
Do it with irons. I have a real nice acog and didn't bring it. I shot the course with iron sights. Now when I use the acog it is so much easier. This course is about fundamentals. They will allow the scope though. I shot the first day with a 15-22, and the second day with a 5.56 AR. You will definetly want(NEED) 4 magazines. PM me if you have less and I will loan you a couple for the weekend.
They run the course very quickly, and the AQT is done in 4 stages, timed, with 10 rounds each, and you need to be clear for each position change (three positions)..