I get between 19,800-20,100 pts each time for clearing the last stage with 2 stars. These are my current levels, but I was beating the stage with them between lv 20 and lv 30 except for Marlin who was lower than that. Sadly don't have Vije. That 200% would help big time.
Party:
Maia-lv 35 Fully LB'd
Dia-lv 37 Fully LB'd
Galette-lv 37
Shesta-lv 40
Marlin lv 26 Fully LB'd
Ania lv 31
Holly lv 45
Keifa lv 28