VFX opinions needed:

I’m really trying to keep this Tarkin scene from RONE in my edit but the trick is that it takes place well after not only Tarkin is dead but the Death Star is kaput. I feel like I can get around the Tarkin part by having him say he’s a clone and just moving on, but having the DS in the background is much trickier.

Trying to cut out/pan&scan the parts where the DS is super noticeable results in a mess, so I was planning on replacing the window view with a nighttime view of mountainy terrain similar to Starkiller Base (called Tarkin Base in my edit) to hopefully match the light from the view coming in.

I would mask off the windows and track those opacity masks in the various shots to have a lower layer with the new background come through. I’d also try & match the focus & blur of that new background to the surrounding original in each shot.

My question is: does that sound reasonable? Am I missing anything super-obvious?