how old are you? the back to back days will be really good and I think you could make it work.
1- high intensity
2- something like sweet spot bursts or even short threshold burst workouts
3- endurance
4- one more high intensity
5-7 work
day 3 or 4 could also sub in a really long ride every other week.
do you life? If you’re over 35yo I’d highly recommend it. Once you adapt to that over a couple months you could get a gym session in while away on day 5 and 7…massive benefit to your neuromuscular system, plus added benefits of injury prevention and your core will have you shredding the bike so hard.
good luck and let us know what you end up doing!