Dear 737Max,
You are right about all you say but, of course, I want to add that I think in the optmistic way, not in a situation in wich the worse is going to happen. But knowing the staff and the organization that is behind this program, I'm feeling safer here than choosing any other option I had.
About SPA, as a charter company, its market is very volatile and changing, so they just recruit pilots adjusting to their punctual needs (except a basic pool), so basically, if they like you, they will consider to take you always they need rated and 737 experienced pilots. Is a company with a lot of movement. Let's see what happens but I like the way they work and I'll do of course my best to make them like the way I perform!
Best regards and even better flights!