This is a tough call depending on if you are street worthy or not. I did some zooming on google maps and made a fairly accurate trail guide.
The red is what is paved roads (or close enough to paved). The green is offroad, however, I could get my trailer all the way back to the point where I made the orange circle, that's where "Cow Creek Road" ends and the "Crown King Road" begins. I'm by no means saying I'd want to trailer that far, but I was just asked last week to get my trailer back to that point for a recovery.
What I may recommend since 99% of us would be coming off HWY 17 is to meet/stage at HWY 74 & I17. There is a huge complex with Home Depot, Fry's etc. I hate to say it but vandals have been breaking into vehicles and slashing trailer tires in desolate ares, specifically on Table Mesa road from what I hear which is right off I17 so I'd say it's in the general area. I'd rather leave my trailer in a Fry's parking lot. Plus there would be no backtracking if we did it like this.
So basically you would
1) meet at Hwy 74 and I17, drive 10 miles to trail head (and probably meet Rick there)
2) run to Crown King (36 miles offroad)
3) drive back to I17 (about 20 miles of gravel road)
4) drive I17 south to Hwy 74 (about 20 miles of HWY)
5) load up trailers from there and head home.
Any other spot like meeting at the trailhead would involve us backtracking the 10 miles from HWY 74/I17 intersection. Now if we have trail only vehicles that makes things difficult, but in all honesty, Crown King probably isn't that much fun for a trail only rig.