David,
If you decide that you need autofocus and autofocusing lenses you will have to change from the AE1 Program camera to an EOS or equivalent system.
I used the Canon FD system and lenses up until 1984 when I switched to the Leica R system. If you are going to use the lenses for sporting events and for wildlife a lot of the focusing will be less than at infinity with these lenses. As an example for wildlife photos it is generally recommended to be within about 20 to 50 feet (frequently closer). For my work, I have gotten around the need for autofocus. Autofocus has its uses and your shooting style and the "capture" of the image will depend in part upon auto or manual focus.
For many sporting events, prior to the advent of autofocus, many sports photographers had preset distances for certain locations on a sporting field, such as for baseball, they would have distances for 1st, 2nd, or 3rd base in baseball.
Autofocus, though there have been vast improvements do not solve everything. Some people swear by while others swear at it. Whichever system that decide upon, it will require practice to become proficient in the usage of the equipment.
You may wish to rent both kinds of systems to better determine for yourself whether you believe that you need autofocus or whether you would be happy with the manual focusing systems.
One thing to be aware however, it is much more difficult to manually focus an autofocus lens than it is to manually focus a manual focusing lens. Additionally, manual focusing is generally considered more accurate than autofocus when sufficient time is available.
Rich