I am a similar build and weight to you and a tad taller
I tend to wear gear from the outdoor shops though I don't wear vests. It tends to be sized more normally than the slim fitting running manufacturer's gear.
Having said that, Nike gear goes up to XXL and tends to be looser fitting
Otherwise i wear Berghaus Tech Ts and The North Face Agility shorts.
A cheaper alternative is Time to Run gear who are generously sized and go up to XXL on some style