Is your final show in August? Or did you buy him in August? If you bought him in August, what is the date of the show that is most important to you? (Like state fair, NWSS, NAILE, etc.) Being that it is early February (assuming your show isn't until summer), I would just brush all his hair forward. Once he starts shedding, then I would get the Sullivan's Dually Hair Shedding Comb and use that to get the old hair out so that new hair can come in. I have a smart sensation comb that I won at a clipping demonstration, and even though I haven't used it much, I would much rather have the hair wizard (if I could only have one). I think the smart sensation brushes are better for training and growing hair, but on show day (or practicing show day prep at home) I think the hair wizard would be better. As for the blocking blades, I use the Andis Super Blocking Blade, and the Medium Blending Blade. Judging by the picture, I think the Andis Super Blocking Blade has 18 teeth. I don't have enough experience to be able to tell you whether to go with 13 or 20, but we had a number of people recommend the Andis Super Blocking Blade as the blade to get if you can only afford one. What breed is your steer?