That's a pretty tough loop to pick up those 4 peaks in one trip and still minimize mileage/elevation gain. If I was doing it I'd hike Basin/Saddleback in and out through the Garden, then "pitch my tent" at the Whispering Pines Campground
and then dayhike Gray/Skylight via the LOJ the next day.
If not, the problem is, from any direction, you are forced to deal with either Marcy or Haystack, which pretty much throws minimizing gain/loss out the window.
You could go in from Elk Lake, hit Panther Gorge and summit Skylight and Gray on Day One,Tent overnight in the gorge. Day 2 requires going up over Haystack, then over Basin and on over to Saddleback. From there, depending on the ablity to spot a car, you could head down the Ore Bed and out to the Garden via the JLB. This would be reasonable and doable, but not particularly easy with a full pack on. (
1 nighter) You could easily add the 2 night in one on many spots along the Johns Brook valley.
If you couldn't spot a car, oh boy
the choices pretty much suck (longer and more difficult). Head back over Basin (again), then then down to the col between Basin/Haystack. I beleive there still is designated camping at the old SnoBird site which is right in the col, so you could stay your second night there. From there, your faced with a very long and arduous (I hear) roundabout journey via Marcy Landing back out to Elk Lake OR; you'd have to head back over Haystack (ughhhh) and out via the Marcy-Elk lake trail you took in. (
2 nighter)
This is off the top of my head, with no map, so forgive me if there are better map options I can't think of right now (at 2:30 AM
). Btw, the tent sites are fine at Feldspar Brook, but I can't see how'd you'd need them for this trip though, as the approach from that side would seem much harder.
I'd double check the Marcy Landing route if you intend to use it, some might be over private land/trails, I can't recall.