One man and a chainsaw can mulch anything.
I highly recommend you utilise the assistance of friends in this project as lifting logs is a killer on the body. Even worse when you’re on a 30°-40° slope.
The premise is you bury logs under soil and plant on top of them. Initially it’s not so great as the bacteria breaking down the logs steal nitrogen from the plants nearby. This effect however is reversed with interest afterwards. You can plant in the dirt covering the logs and they will flourish from the decomposition happening below the surface.
I had two massive trees that were felled in my back yard and I wasn’t keen on lugging them uphill to the street to load them on a truck to take them to the dump. A friend sent me a link to hugelkultur sites and I immersed myself for several days in this whole new world.