Like i Said, careful. Usually, people go for glad and R1s in the last day of the season. That's Why i Said to camp that rating YOU got so far, otherwise youll end up going down when comps going for glad will be formed and will start to play seriously.
Better be safe than sorry since you got so high on MMR on a bracket not so popular as 3s. Based on my previous experience with 5s, i might say you're already in glad zone with your current rating. IM saying this even if i dont know your ladder rankings and i believe im not wrong.
ps: good for YOU that you got already experienced ppl in your team. This way, the learning and adapting curve of end Game arenas is alor smoother for newcomers like you