Gandolf,
#10 TMC 100 hook is what I believe I used for most of these. A standard #10 nymph hook of your choice should work fine, as would a 2XL hook since you can cut the rubber leg to whatever length you need to cover the shank below the bead. 3XL will catch fish too, but probably is longer than it needs to be.
Small is good when ice-fishing. I stopped using split shot to help sink lighter ice-lures and try to use adequate weight built into the lure, because too many fish would pay attention to the little split shot instead of the lure!
David Merical
St. Louis, MO