6 months is way in advance. PSF policy is to ask 4-6 weeks before the event (Timeframe: We require that applications be submitted 6 weeks before the event/project start date - this gives us enough time to thoroughly review, ask questions, and have enough time to send you the funds.), so 6 months is more than enough time.

And we're missing the issue: the organizers were asking for $9k, which by all means should have been an easy yes/no. If they would have asked for 100k, maybe, but $9k is chump change.

The funding FAQ gives general guidance of $2500 at the high end and still discusses virtual events. I suspect some of the problem is the process is for very low budget meetups, and virtual things, not six-day real world events.

Or you simply are extremely cautious not knowing how bureaucratic and slow the PSF is or is not.