second that size because of your weight. In all the long road trips I did, a bunch of 700-1600km trips (450-1000miles) I never had a flat, only weighed 135 and prob had 40-50 lbs (actually never once weighed my bike on any of the five or so long trips I did) and I always had 28s on my touring bike. Liked the combo of size alright enough to go on a gravel road , with good rolling resistance.
Used to use the same tire, cant reacall what brand but it was a kevlar one, definately worth the extra money.
would get flats in town once in a blue moon, but never on a trip, was always careful to have pressures at max, and probably on the road there is less glass bits than in the city.
A friend of mine weighed 125lbs and toured with 25-30lbs on sew-ups. When I weighed 145lbs and toured with 15lbs 28mm was fine and 32mm for 20lbs. Now I'm 220lbs and the one tour and multiple grocery trips have been on 35mm-2.0 tires. I go a bit slower and love plowing through bumps I used to jump over.