need help

seremz

so i'm level 81 at 233k BP, my formation currently running of kisuke - rukia - ikkaku - main ghost blade - renji for pve dailies, and inoe - yoruichi - main - ikkaku - sado for pvp, ranked 5th in arena, rei level is at 37, i'm gonna focus it till i get to 40, need help to what to do after that, my palace is stuck at level 27 level 75 palace, stuck in the 2nd fight espada 2
so what do you think will help me greatly after level 40 reiatsu ? should i recruit sajin ? harribel ? or saving for kenpachi to fully utilize my pve dailies damage ?