So...in one thread, you contradict yourself twice. First you admit that f/2.8 doesn't provide you with all of the light you need after lambasting my f/4 kit. Then on top of that you plan on buying the $1700 sun on a stick, of course staying with your theme of purchasing low cost glass because of a "budget".
Then you start hoping for an aps-C sensor body similar to the new Canon 7D for sports use, quite soon after you declared the FF to be the only pros choice. Hmmmm.
A good photograph is knowing where to stand.
Rule books are paper, they will not cushion a sudden meeting of stone and metal.
Ernest K. Gann-Fate is the Hunter.