a little more info on you would help, like your age.....that would determine the class you shoot. as for your bow shooting slower than 285, that is not a problem, there is no minimum speed limit in the ibo, but there is a limit on speed if you opt for that, or 5 grains per pound. your bow should be fine for whatever class you want to shoot.....the limiting factor is usually the stabilizer and sight combination that dictates class.....