Doesn't sound anyone can talk you out of anything... despite our decades of experience doing exactly what you are trying to do.
The hiring boom could last for 10 years, it could slow, it could end tomorrow. No one knows. There will likely be airline hiring for the next 15 years in some capacity. And there are TONS of other areas of aviation to explore.
A four-year degree from an actual campus is not only more valuable (generally, not always), but as GF alluded to, it's a heck of a lot more fun. You NEVER get those years back and they can and should be some of the best of your life. Find a school that fits. There are MANY aviation schools if your heart is set on that. (I'd guess well over 50% of Aviation degree recipients regret what they majored in for varying reasons).
It's great that you are motivated, no one will fault you that. Planning is great, too. Just recognize that even the best laid plans fall apart.; especially if they are so stringent and contingent on each piece working a specific way. I never in a million years would guess that this career has taken me where it has.
Get that First Class Medical.