Hi candace
I'd love to agree with you, but I'd say most of us will have issue with altitude at Mt. Whitney(more or less).
Last year was my first time to summitted San Gorgonio via Vivian creek, to my opinion it's not as hard as Whitney, you practically just keep on walking and you'll get there sooner or later.
For Whitney it's much more than that. I summitted Whitney once in late 70s on second try, last year due to my co-hikers got sick, we had to settle for Trail camp.
But I'll try Whitney again this Aug 1st all by myself at the age of 58 just to see if I can make it in time.
I'm going up San Gorgonio alone this Sunday for Whitney prep.