I’m a fan of 29” but that is a personal preference.
As for gearing, I actually slightly prefer 2×10 when riding hilly terrain because I can transition from downhill to climbing with a single click of the front deraileur as opposed to cycling through multiple gears on the rear. But when I’m off the bike, I love the simplicity of the 1x. No front deraileur to mess with, simplicity, easier to clean the area around the bottom bracket with just a wet towel, etc. So overall, I’d go with the 1x