Looking for lens ideas

[poorman]

Hi my name is Damien im looking for a lens possible a f/2 maybe 70-200 to take fast photos as in rc helicopters i have a canon 550 D abd are new to this era and its driveind me mad..Photo shots will be around the 100-150 ft mark and heres a eg of what im after in a pic hope to here from you ..merry xmas