I was between jobs so I had the luxury to do this - I wouldn't recommend this heavy a schedule for people who already have a job. It's impossible.
Even if you have the free time, I'm surprised that they managed to batch the different stages and have all interviews in the same time period. If I'm interviewing, at any given time I'll be sending out resumes, and talking to recruiters, and doing technical interviews, and waiting for feedback asynchronously for different companies.
What a luxury! I only had 3 weeks of vacation and burned through almost all of it because every company expects you to do multiple rounds of interviews during business hours.
Eventually I just quit because it was literally impossible to search for a job while working full time.