The easy (and perhaps only way) I can see of handling the white around the windows and doors is to have a sign/graphics company CNC cut white vinyl for you.

Now this should not be too expensive –the windows one constant shape that only needs machine time to repeat. The rear doors are slightly thinner than the forward.

The window masking templates you use on the inner fuselage surface are then the inner of the CNC cut vinyl. Solves two problems at once.

The door decals provided in the kit are unlikely to show up against such strong fuselage colours and so vinyl white for door outline I suspect will be necessary.

Nice nose gear. Just remember not to permanently fix the leg height such that it can not be easily altered. Nose wheel height adjustment is important on pre-flight final inspection. Wing root incidence angles need to be checked.

Ian.