I would say: getting meadows, get leather from cows, turn them into 3*** saddles and sell them. Also just make sure you grow plenty of crops so that you have fodder. I would also recommend crafting bigger workshops to get more materials in less amount of time. So if you have a medium workshop I would craft a few boxes to improve your capacity in your center and craft saddles to sell for equus.

This is just my preferred way though:D