Wow, you have great patience!
Not surprisingly, the inside of a PFO ballast case is identical to the insides of yours! There's only 1 way to wire it. You'd probably have to dremel out the aluminum panel on the top to fit in the 2 timers, but nothing you couldn't have handled. There's a flat surface down the middle where there are no heat sinks, so that would make a perfect spot. Other than tapping the 110V with the timers, the rest is already wired up from factory.
But regardless, you've purposely gone out to learn so that deserves some cudos!