For the RR phase, I plan to make time control up to the players, because there isn't harm in doing so. There will, however, be defined controls (TBD) for the KO phase.
If it's too problematic then I'll make it RR 15/10
We'll play rapid for the KO phase, not blitz. So no 3/2. As for the specifics that I'll think about again later because I actually planned 15/5.
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The important thing is that, upon evaluating the premade tournament mode in lichess I have deemed it UNSUITABLE for our purposes. That and insanipi would prefer a RR phase first, which I believe is fair if we have 14 players (too hard to go straight into KO cause 14 is not a power of 2).
Expecting 14 players to all be free at a certain time slot is just too much of a hassle, since this isn't being formally held at a venue.