Way to revive a dead thread... But since you made it in the first place, you get away with it.

Rinoa's in-game HP is not the same as her HP when she is held hostage by Adel, so that shouldn't matter. But 3000 (especially unjunctioned) HP sounds good at that level.

I remember when I first played FFVIII, I rushed through it, and ended up facing Adel at about level 30, with Rinoa dying all the time because I used my GFs, and having to start ALL OVER because I had no earlier save files...

Being able to inflict over at least 1000 HP a turn with a normal attack is vital in the battle against Adel, so junction high level (-aga) magic, or Death, Zombie, or Ultima, if you have it, to the Str stat; everyone's should be in the 70s at least.

The best HP to have is anything over 2500. Any lower than that, then use Protect and Shell. Best of luck!