Guys, if you are talking about the "low-elevation" plan "B", the I can suggest the following plan:

1) Friday morning or lunch time meet in Big Pine.

2) Using the quickest route (the northern Saline Valley gravel road) go to the Warm Springs area and set the base camp. This area is very unusual, and has good conveniences. I hope that in the middle of the Friday it is not going to be fully occupied. If there is no place there, then we can more further to the north toward the Steel Pass and set the camp(s) there.

3) Saturday morning, we go to the Racetrack playa through the Lippincot road. Then we are passing Ubehebe crater (fit young people can hike to the bottom). By the lunch time, we can get to the Scotty's castle and those who never been there can visit the "castle" on guided excursion.

4) Then we go to the east to the Eureka dune, and then through the Steep Pass we return to the "base camp" by the night.

5) Sunday we are going from Warm Spring through the Saline Valley to the west, toward Inyo mountains, to the Cerro Gordo trail. If it will be blocked by snow, then we can exit the Valley over the South Saline Valley road; if it is open, we cross the mountains. There are actually two roads through the mountains: good gravel direct road through Cerro Gordo ghost town, or more difficult trail that Ray posted the link. We can figure out which road is open and go through it.

6) Then, in Sunday night, we reach the Owens Valley, and some people can go home, others can stay for Monday and play, for example, in Alabama hills.

Higher elevation variant, if the snow allow:

1) Friday - Pleasant Canyon/Roger Pass loop.

2) Saturday - Mengel Pass / Goler wash to the main Valley. Then we can camp either in Stovepipe large camp or go toward Mesquite to North-East.

3) Sunday: Scotty's castle, Racetrack playa, etc, go home.

We can set both plans and choose one depending on the road conditions by the middle of April.