Making money shouldn't be much of a hassle. Bosses give tons of the stuff, and I should be able to scrape by on whatever stands in my way.
Anyway, I finished the damage chart:
I'm hoping that it's accurate.
The boss list includes the three sub-bosses and are arranged chronologically. I haven't actually analyzed any of it yet, but it should prove helpful in planning out what to upgrade to.
(the ?? for the dragon simply means his invincibility is unreliable due to being too out of range to attack constantly)