That's a personal question to ask yourself as every person has a different mindset about it.
When mine finally arrived this past April, I purchased from a dealer >10hrs from me. I've made several trips for warranty repairs (a brake hose and A/C leak), a windshield, and my 12k service to a dealer about 2.5hrs from me. Next week I'll be having another warranty repair done (pinion seal on the rear diff leaking) at a newly opened dealer that is only 20 minutes from me.
Earlier this year I drove from Maryland to Flagstaff, AZ for Overland Expo West, taking major interstates the whole way, and at no point in that drive was I within the 100 miles of a dealer (what the free towing coverage provided by the roadside assistance provider offers). At no point in that drive was I worried or concerned .
With all that being said, the shop that works on all of our vehicles is just over 5.5hrs (if we time it without traffic, otherwise closer to 7) each way from me, and I'll happily make that drive for something as simple as an oil change if I don't want to lay in the driveway in the winter to do it myself because I have a long relationship with them and a lot of trust.
There are plenty of others who want a vehicle that can have full warranty/service capabilities in every small town across the country. This isn't that vehicle, and there is nothing wrong with that mindset or desire, but it is important to assess what the Grenadier is and what it isn't, and not go into the purchase/ownership expecting it to be something it explicitly isn't.