I'm looking for advice to transition manual to programmed at a castle

I have a mini 2, and only about a dozen flights. I’m going to Spain next week and want to capture a castle of a friend, and would like some advice on how to approach programming the mission. I want to start inside with the drone in front of me and my friend, and fly backwards out the window. From there, I’d like to have the drone fly a programmed route all around the castle, with the camera focused and centered on the castle. I think I see how to program a route outside the castle, starting outside the castle, but have no idea how I can transition from manually flying out the window to a smoothly transitioned all-in-one route around the castle.

Any advice? It will be much appreciated.

Gps will not catch indoors

Post production is the way to go.