First, make a silo and don’t cut too much of the grass on your farm until after you buy a silo. And don’t cut it when the silo is full.
Second, there aren’t that many extremely profitable crops in spring year 1. You can get strawberries towards the end of the season but you should buy but not plant them until the beginning of spring year 2.
It’s not until summer that you get your first very profitable crop which is blueberries. And I’m fall you plant cranberries which are even more profitable than that. After that you should have more money than you know what to do with.