Dick,
Your remember our 40ft Dynasty. Well we went into Kings Canyon NP with it. We avoided Sequoia NP with the MH but visited it from the South staying in Visalia I think. You can reach Sequoia by car from Kings Canyon.
We did 101 several times from without any problem. Do not take the old road above Benbow (nice cg there) from Philipsville to Pepperwood. Do that as a side trip from Benbow. But 101 itself poses no problem despite a few narrow stretches. CA 1 North of San Francisco is another story especially the Northen portion above Fort Bragg.
Souvenir, souvenir...
Roger