Time Attack Wopal (solo) help?

I don't know if anyone here has any advice for Time Attacks, since the weekly rankings can be rather competitive... Regardless, does anyone have any time saving tips? For this, I'm playing as a Force/Techter. The fastest time I can manage was 7:52.

I managed to do at least a minute faster. Basically I used some charged Ilzonde to plow through some enemies, and optimally killed the end bosses with a fomelgion... sazan for those dumb buttons, and gizonde for the surrounding enemies that spawn. I don't know. there wasn't really much of a strategy besides finding the fastest way to dispose of small enemies.