Take it from someone about your dimensions on a frame that accommodate very large 700c tires. The fenders are going to be the most annoying part of it all. On larger tires you need a larger fender and I've found they do not come in small increments of width.

If I was going larger I would look at the Little Big Ben it's a nice tire rolls smooth and has grip on some dirt.

In all my years of doing gravel races and just rides I have used Pasela's and now T-Servs. The grip is fine for this and they have a semi nice soft plush feel, plus smooth on road sections.