Thoughts on rough itinerary

Start date is September 3rd, Cottonwood Pass

Getting started on planning my itinerary and looking for any all advice and recommendations

This will be my Wife and I longest backpacking trip but have done a few in the past, most recently the TRT

We're typically good for 14-16 miles a day but have done up to 20

Day 1 Cottonwood Pass to Rock Creek (13.8mi, 1600ft)

Day 2 Rock Creek to Crabtree (7.3mi, 2000ft)

Day 3 Crabtree to Whitney and back to Crabtree (14.8mi, 3800ft)

Day 4 Crabtree to Tyndall Creek (8.6mi, 1400ft)

Day 5 Tyndall Creek to Lower Vidette (12.8mi, 2200ft)

Day 6 Lower Vidette to Independence (9.4mi, 2200ft)

Day 7 Zero in Independence

Day 8 Independence to Middle Rae Lake (12.1mi, 3800ft)

Day 9 Rae Lake to Lake Marjorie (15.6mi, 3600ft)

Day 10 Lake Marjorie to Lower Palisades Lake (11.8mi, 2000ft)

Day 11 Lower Palisades to Star Camp (15.2mi, 2300ft)

Day 12 Star Camp to Evolution Meadow (15.5mi, 1700ft)

Day 13 Evolution Meadow to Marie Lakes (16.3mi, 3000ft) stop halfway at MTR to pickup resupply

Day 14 Marie to North Fork Mono Creek (14.4mi, 1800ft)

Day 15 North Fork to Purple Lake (13.2 mi, 3700ft)

Day 16 Purple lake to Reds (13.8mi, 900ft)

Day 17 Zero Day

Day 18 Reds to Garnet Lake (13.9mi, 3700ft)

Day 19 Garnet to Lyell Canyon (13mi, 2200ft)

Day 20 Lyell Canyon to Upper Cathedral (14.2mi, 1300ft)

Day 21 Upper Cathedral to Happy Isles (17mi, 700ft)

So I kept everyday under 4000ft to not over do it

We are on a time crunch for work and have to get done in 21 days. Think it would be better to leave the car at Tuolumne Meadows, finish there and Day hike TM to Happy as long as time allows?