Baker is the long way. I have and would still go through 395/Trona if possible.
Yes there is a long 9.5% grade over Townes Pass. Gear down, go slow and enjoy the ride.
"Right now, the only way to get to Death Valley from Ridgecrest, or from north on Hwy 395 is to go to Lone Pine and take Hwy 136 to 190, or Olancha and take Hwy 190 east. Stop by at Father Crowley Point to look down into Rainbow Canyon, the throat of an ancient volcano, and you’ll go through the other half as you climb up to Townes Pass. "
http://www.maturango.org/janetmuseumpages/deathvalley/How_to_get_here.htmlWith the road through Trona closed it may not be worth the drive around to Lone Pine. :(