If you get a road fixed / single speed with 36 spoked wheels and the biggest tyres you can fit you will have no problems. The wheels will be fine. A well built set of 700s on 36 spokes with zero dish are pritty strong as long as you are not trying to bumg it up a curb without flicking the rear wheel up. A a good strong steel frame will hold up well. You are heavy but think abour people who tour on 36 spoke wheels (dished) wich are dished with 30 kg plus of gear and weigh 100+ kg.
If you get a road fixed / single speed with 36 spoked wheels and the biggest tyres you can fit you will have no problems. The wheels will be fine. A well built set of 700s on 36 spokes with zero dish are pritty strong as long as you are not trying to bumg it up a curb without flicking the rear wheel up. A a good strong steel frame will hold up well. You are heavy but think abour people who tour on 36 spoke wheels (dished) wich are dished with 30 kg plus of gear and weigh 100+ kg.