If you wanna rent an excavator for a day, that's fine.
If, say, I go for a threefer (rocket season extender BB with straw-level hugel BB that also works for GAMCOD) I assume that I need to account for the rocket build expenses? Or should I just focus on the gardening expenses? Do I account for the fuel of an excavator that's free for me to use?
Speaking strictly from the perspective of gamcod: I think it is wise to take some video summary. How much you spent, and how you think that this change will last 40 years. And if you build a dozen gamcod plots (or equivalent), then i think it would be fine to divide by 12 for the gamcod plot.
The glass is neither half full or half empty. It is too big. But this tiny ad is just right: