That is more of a forest farm than the forest farm map. Very impressive.
For a majority of my save file, my income was mostly based around mayo, cheese, and ancient fruit wine (using the greenhouse, which I made a priority to unlock as I was on the beach farm). You can make a surprising amount of money by raising chickens, since you only need to buy one to get started. I think many people also overlook cows as another steady source of daily income. While animals and their products are definitely outclassed by wine, the daily return from chickens and cows is forever and adds up over time.
I do not recommend raising many pigs unless you clear a large area for them to search. I found out the hard way that if the farmland is packed to the gills with Stuff, the pig has less of a chance to dig up truffles. They need bare ground without grass, trees, or crops growing on it.