Someone removed some of the screws from the relays, but it looks like some are on the bottom of the box.
You should put those somewhere safe so that they don't get lost.
I would go with an Intelliflo pump over rebuilding the current pump.
Your pump breaker should be a 20 amp GFCI breaker, not a 30 amp regular breaker.
Thanks for the recommendation. All things considered, I think a new Intelliflo is the way I'll go. And I'll swap out that breaker as well.