Is it too late for me to start playing football, and what position would suit me the best?

So i plan on playing football in my junior year and ive never played football before. I watch it all the time and i know it really well but is junior year of highschool too late for someone to start playing when theyve never played before. Also what position would i b'e best at im 5'9'' 219 lb. (mostly fat) and i have good instincts. I have decent speed and decent at catching. If it helps i joined a gym and plan on losing weight/gaining muscle over the next year and i also have joined a weightlifting at my scool.

Side note: any tips for losing weight/ bulking up