For Abyssea I pretty much do this. Slotting Refresh, and Auto-Refresh spells are kind of useless in abyssea, and since they take up a tremendous amount of Blu points... it frees up a lot.

I Typically have:
Fast Cast
Double Attack
Magic Attack Bonus
Store TP
Zanshin
Dual Wield
Skillchain Bonus.

The rest is damage and trigger spells as needed.