Good luck with this nsr community.
I just checked the rules, seems very good for most, but i'd say you should do like last tardet's duel tournament and swap from ft 3 to ft 5 on or after the second rounds.
If you keep ft 3 until semis, 95% of all the duels will be ft3 (only 4 matches won't be ft 3) and that isn't suitable at all.