Most of big folks I know go with Ti or steel frames. These days Lynskey and Litespeed have very good endurance bikes that would be great for most any ride. Some have enough tire clearance for light gravel.
I am still on a Lynskey R240 rim brake road frame and it was one of the best bike purchases I have made. Have been on it for almost 10 years and still going.
Also look at Habanero disc road bike. See link below:
https://www.habcycles.com/road.html Their pricing is good and the frame design is good if it fits. Has clearance for 32mm tires.
Just a few ideas.
Alan