I haven't been to Ballard's, but I've been next door at Sportsman's and we are going up again in February. Both run very similar operations from what I can tell. You don't need to pack a lot if you don't want to. The bombers are heated and the shacks are warm when you get there. Jeans and a sweatshirt is all you need in the shack. The last time I was up, I took some bibs and heavier boots with me and our guide drilled some holes outside for us. My dad and son spent all day inside, but I would venture outside once in a while for a little change of scenery and did well. It was quite cold that day, so the extra clothes were nice to have, but not necessary if you're staying inside.
Good electronics is essential in my opinion. I had one with me, but I rented a second from the lodge for my dad/son. I would emphasize the importance of the unit having zoom. Mine had it and was invaluable. The rented units did not have zoom and were somewhat helpful, but not near as much. In 32' of water and the walleyes glued to the bottom, the zoom feature was a big help.
One item that I took on a whim that was really nice to have was a nice thick foam pad to sit on. Most of the shacks have a plywood seat, or folding chairs, but after 8 hours, itw as nice to have some cushion.
You'll have a blast!
