Chaos: Also be mindful of the fact, that with weekends set, two slow players can result in only two full moves per week! We know that asking people to move fast is pointless (Nothingness tourny demonstrates that).
An alternative permutation would be fisher clock with setting 28hours/14hours/2days which would squeeze out a few more moves from the slow players.
(hide) If you want to play a game with an opponent of a similar level, you can define a required BKR range for a new game invitation. Then nobody with a BKR outside this range will be able to see/accept it. (Katechka) (show all tips)