Fuck getting bigger. As a 215 pounder I can say it sucks being bigger. I can still run, especially for a big boy, but if I was 185-195 it would be so much better. You can be strong as shit without being that big too- I know dudes who look scrawny and are deadlifting 4 wheels. Lift to be stronger, low reps high weight. And then run using a 10k training plan. If you stay the same weight who gives a shit. You’ll be more effective in whatever selection your pursue.