Shooting Temple of Doom repeatedly is a relatively safe/valuable MB. The 8 ball Ark multiball isn't worth 19 shots.
If the Last Crusade saucer is safely catchable from the left and is backhandable, it can be looped for the entire game to get big points.
In competition, only the Temple of Doom shot should be prioritized. Look three, everything is lit for 1 million. Super is the Temple of Doom shot. Super safe and easy too.
The "Advance Scene" skillshot is worth a free 1M points and advances 1M each time you select it if you don't have much to make up.