I am not a developer at all (electrician, retired, live in a flightpath), but I'm pretty sure you can build a healthy retirement with your absolutely breathtaking solo project.
At the same time, I'm not sure how you monetize such an easily "stealable" idea. My hunch is that you'll see other flight trackers debut your perspective as one of many layers within their own trackers (this is where you come in, as consultant?).
At a minimum: If your resumé previously lacked page 2, it no longer does.
I'd recon your page 3 has already begun, too... as you digest all these intentional comments, over the next few months: don't ever lose your glee of hackiness.
Luck, given — but you've already done all the work!
At the same time, I'm not sure how you monetize such an easily "stealable" idea. My hunch is that you'll see other flight trackers debut your perspective as one of many layers within their own trackers (this is where you come in, as consultant?).
Godspeed, ace.