Do whatever will make you enjoy the game more. As for few future metas- the moment minato gets attack scalling, you have meta team. The moment sasuke susanoo gets his mutations- you have meta team. Most of current English version meta teams revolve around event only ninjas and not GNW/Kage treasure ninjas. In this version there were about 6 months between jinch1 and gnw treasure release, but cant guarantee its going to be the same for yours. Just as well nobody can guarantee that GNW kurama meta's lifespan will/will not be decimated by rushed habanero kushina release like it was here. If you can catch up as quickly as new metas come and go, feel free to get your Ay and maybe fini*achi and use him at his best moments. He's still strong now, but nowhere near as strong as he was before everything had a dodge/immunity. Long term option is to go gnw, but not really with super rares in mind but with hashirama as a goal. But honestly, you cant go wrong with either option, since both Itachi and gnw super rares are still a class of their own. So do whatever will make you enjoy the game more.