I would go Diva. Even though IR(Fart Skill) is only one AoE, it helps a lot in grinding at CT or Fiesta. Charms have the best time surviving.
Go Pure HP or Pure HV in bonus points.
From my perspective, you don't need a lot of HV. Your end goal is to have at least have 500 HV. AP and HP should be important to a Cat.
I don't know how a Diva's Stat Build and Skill Build work because I only tried a Gambler. Ask Dare maybe?
You should get AP and HP equipments first. HV isn't useful at the beginning because everyone knows monsters are drunked at aiming.
Sorry, I don't see any reason for a Prima to go pure HP. They are best in AP and HV with decent HP. The only reason Charms stack HP is to power IR and PC.