I've been on some of those roads. Most that I've driven were either washboarded or sandy, with few places to pass or turn around. I try to visit such places on T-W-Th to minimize the possibility of oncoming traffic.
Take a look at the BLM Booklet
"Motor Touring in the Eastern Sierra, Mono County". Click on the photo of the cover; booklet opens on screen and is downloadble. You can also request a paper copy. Perhaps some ideas there? I especially enjoyed Crooked Meadow Road last September. You could easily take a trailer there, but it would undoubtedly be busy on Memorial Day.
Also, you can camp in the Mono Basin; see page two of this
linked document under Dispersed Camping and Permits.
As to bugs, I have not visited this area so early in the season, have not experienced any no-seeums.
Have a great trip!
