One of the reasons I feel this project is feasible is some nice open sources. One of them is OpenAFM, it holds lots if valuable information like electronic schematics. It's power supply and piezoelectric controller looks interesting. It took me time to find the software which will conver schematic to eagle files. I got those: 

Power supply board

Now it's only to buy all the components and try to connect them. Fingers crossed 🤞

Although it might look scary a bit at first but after some researching the components and you get this simplified schematic

Some pictures from openAFM  (converted to Eagle files)

This will help to reduce noise in the final layout