Is this good strategy to get amateur fight? Is it making any sense?

Im beginer to kickboxing with like half a year experience. Im naturally pretty talented for sprinting which I started training like 2 months ago. So I am beginer at both. I cant really lift weights right now because postural issues, especially in the shoulder area. So I cant lift weights in athletic way to get better in kickboxing. But I can pretty much sprint instead of it. Will sprinting complement my kickboxing? Should I sprint to have plan B if I somehow wont progress enough in kickboxing to make sense out of it? My goal is to fight 1-3 times and if it goes well or my hunger increases after that then fight more. Right now Im not too good but I would like to fight in like 1 to 2 years from now. Should I do sprinting workouts 2 times a week with 2 kickboxing classes a week? Should I go to grappling practice which is only once a week? In future after fighting amateur I want to play American Football in Poland on amateur level of pro if everything goes right(I want to be tryout in two years). So sprinting would be a good base for american football. Are my plans making any sense or am I just dumb?