I'm 5'10" 280lbs, you will not find much bigger kicking around. I run, poorly, it's a fact I have to live with, the gazelles had to keep coming back to get me on the runs and had to thank me profusely for helping out on the ruck marches. It's all very ying/yang in the forces, not everyone is good at everything. I can out lift/pull/push or drag most, and most can outrun me (god help you if you can't) just suffer through whatever gets chucked at you. There is a place for all types in the forces, if you are willing to give 100% all the time. Good luck, oh and finish school, whatever else happens, finish school.