dont, DONT sell the 1.4x. as for which lenses to sell. i think the 100-400 would definitly be the most expendable. really, other than that, sell the lens you dont use the most. but hold onto the 70-200 for sure, pairs up real nice with the 300 2.8. I can tell you that you certainly wont be dissapointed with the 300, its a beautiful lens, produces great images.



