ill say 5 due to the fact of out of the 92 ppl not everyone is likely gonna end up fighting in the first place we have 6 nations so around 15 players per nation,Now consider the possibility of each nation getting a good chunk of battlers unable to participate either due to the fact they drop out or are unable to battle for a few weeks in consecutive turn we will likely end up with much much few ppl per week in the first place and the odds of sending the exact set of participants twice raises under this possible scenario it would be a much more suitable and manageable for each nation and staff to send out 30 battlers(all nations) per week about 3 weeks and everyone gets a chance to fight as well giving odds for less mishaps to happen as its easier to fit inactive players in later weeks or replace with participants from earlier weeks by allowing some freedom to to pick good battles in each set to go on.while puting half of all players per week raises the odds pf some matches not happening in said weeks and more DQ then needed for a nation with a low turn up.