I'd go for ence, but between nip and big, definitely big.
1.) just my opinion, but if u want to get as many points as possible, put a throwaway team like renegades at 3-0 and put ast at the bottom qualifying 7, since ast could easily be upset in a bo1 like they were at faceit major, but if u put them at teh bottom 7 u are garentueeing their point. Just my way tho.
2.) NIP > big, recent roster changes+language+nex inactive for a while+tizian is a bot+gob b isnt a fragger
Probably BIG since NiP are too clutch dependent and BIG haven't played the first stage and had to show off any of the strats they may have, not having a coach in game may be a factor to some extent though, I also think Renegades will crumble under the pressure of an audience and not make it through even if they do get a BO1 win here or there