I finally talked to the two people I was afraid of, and, of course, it was really easy. The only hard part was the dread. My aunt is excited to have me come out there, is not overtly angry about me dropping out of college when she helped pay for it, and has space for me for a bit. The invitation is not to stay indefinitely, though, which is exactly as it should be.
The director who hangs out at Greenberry's talked to me for two hours about how to get into the business, with a step by step plan and timeline. He confirmed a lot of my theories, but cut through all my vague "meet as many people as I can and everything will work out." I've heard a lot of advice: it was great to have someone highlighting the useful parts and showing me the concrete way to make things happen. We exchanged numbers, and he's gonna meet me in LA next time he does a project, which might be in a month.