The Spike Volleyball - My Best: Nishikawa + Hee Sung vs Nishikawa in Tournament Grind

We need to grind tournaments, so what better way to do it than with my most stacked team of Nishikawa, Hee Sung, and Josh Retamar (PH) Defensive setter. Let me know what you want me to do until the mobile update comes out (i don't know the date, don't ask) - grind tournaments on this account? Reboot and do everything from scratch? Use the original characters on the reboot? Reboot and recruit and play it with the first S-tier I get? Take a break? lol.....