If you are convinced you want 29 inch wheels the Ghost Grappler isn’t the best choice, the fork only allows for a 29x50mm tyre, the fork crown is the limiter here, however it rides superbly well with 27.5 inch tyres (as per its design)
I initially set mine up with 29×50 tyres and mudguards, plus a 40mm stem to compensate for the long top tube, it didn’t ride at all nicely, swapped 27.5 x 2.3 tyres in and back to an 80mm stem and it transformed the bike
For what you’re describing I reckon a Fargo is still a damn good choice and ticks all the boxes, there’s a few Fargo alike out there now, the Tumbleweed Stargazer, the Coptic as mentioned above, and then a few choices from Singular, the latest Gryphon having all the attachment point for bikepacking with soft bags.