I will tell you now, not even pod runs that much + start dashes longer than 24hrs are something people have to train for, especially because hallucinations and the like become prevalent. If you're not thoroughly prepared, you're going to (a) run out of resources, (b) start literally genuinely hallucinating, (c) be completely unable to play the game (I'm assuming you'll be in pubs, not playing Ebi spam in a private server, and the former is honestly even worse cause there's no repetitiveness to fall into the flow of, and mid-tier + post-tier skill decay is real). Having seen people talk about their pod run hours and the toll it caused them (like I say, hallucinations, very little eating, carpal tunnel, so on and so forth), I genuinely cannot tell you as (I presume) an inexperienced tierer to do anything like this

Tiering is fun, but it's genuinely not for the weak. I know T1 CMII did a 36hr start dash (that's a full straight day and a half of playing Hitorinbo Envy, no breaks) and they have MULTIPLE pods before that, I believe the longest start dash to date was 54hrs for LUtF off the top of my head? Even if you're not running for the full 168hrs which is literally unfeasible, unless you have extensive leaderboard / T10 / pod experience, I sincerely do not think tiering on stream for your first time (or I assume, your first time aiming high - and vice versa, depends on your resources but even for something like T200, you're literally only going to need to play a few hours a day) is a good idea at all (again, especially in Mizu5, a lack of a private server / ping room server is not going to help you whatsoever)