I am booking a trip to Botswana early next year and wanted to have the right glass. I know I have the wide and mid covered but I feel light on the long end. Right now my longest glass is the 80-200 AFS and I also have a 1.4 TC. From those "in the know," will that be okay or do I really need longer? I'm thinking about pics of the lions, wild dogs, and such. I have been lusting for a 200 f2 or also thinking about the 300 2.8 (probabely not the VR due to expense), but I hate to think of spending the extra money right now--this trip already costs too much!! What do you guys and gals think?