Afci/Gfci on the same circuit
Sure you can but how much running back and forth do you want to do trying to reset this? I have been called to a home the owner put multiple GFCI’s in and he could not get power to the devices because of tripping. I would not add AFCI protection to an outdoor circuit as these normally are running electric devices with motors , saws, mowers, drills etc. AFCI’s don’t play well with motor loads and if you decide to add that breaker remove the GFCI outlet or you may not have much luck at tools working on that circuit.