I'd like to suggest something a bit different:
Avenir Discovery Aramid 27 x 1-1/8 Road Tire Black
It is ETRTO 28-630. I had these on my World Tourist until I converted to 622 (700c). They are strong and long lasting (the cups on my cheap hub wore out, not the tires). They are lively and tough. I am recently down to just under 350lbs, your 250lbs light weight is not an issue. The roads here - amazingly - are rougher than the roads in Minnesota (Belle Plaine <> Minneapolis-St Paul area), despite the lack of freeze.