Special application with the LT8301 or LT3001 fly back converter

LT8301.ascPDF

I am building an application with the LT8301 or LT3001 fly back converter. I need four galvanically isolated 6V DC outputs with maximum of less than 5 mA capability. Attached is a LTSpice and a PDF file of the circuit. I have a prototype which seems to work. A picture of this prototype is attached. In a real implementation I need a physical smaller transformer (with five windings). My questions are:

  1. How to build the transformer, or it is possible to find a COTS one
  2. Do you think this use of the LT8301 or a similar circuit will work in a real application
  3. Any other proposals to an implementation are welcomed

Best regards

Halvor Liland