All night long - more hearts
Geyser - More consumables from harvest
Kawaii - faster experience gain, higher levels produce higher quality consumables
Greased Lightning - lower energy use
max the above skills to level 5.
Expand your monster pen to hold more monsters of the type you want.
Enable an auto-harvester to gather consumables from your monsters, although half as much.
Refrain from having the Iron will trait as the trait makes your monsters counter-productive.