I have a *lot* of questions and thoughts and feelings and opinions about this, predictably, but having made my opinions on the first two options clear, and having announced my partial salon hiatus, I'm afraid I'm going to go read Horowski instead. Curse my sleep woes!

ask for Fredersdorf to be transfered to Potsdam if he can engineer that without making Dad suspicious

Fredersdorf is tall, problem solved. :P