Gonna depend on what software you are using... Something like Krita (FREE) will use layers and you could have one part in place import the other as a new layer and set the transparency so you can see through it...move it into place and reset the transparency... ala windows aligned!
I also add all my best wishes and prayers to you and your wife. I had to live through this as well, twice and understand what you two are going through!
Well, I will put it this way...I have one modeled up using references and it is almost exactly the same as yours...Front windscreen and landing gear are just a bit off from the plan ( didn't have it when modeled)... So I would say you are about as close as you can get without actual Blue-prints...
Well, I am glad you made it and Welcome you to Zealot...
If you could..tell us a bit about yourself...What areas of interest, what you would like to build or what you have built, with pix!
Well, Gee...That turns out to be an ALMOST exact build-up of what I just worked up..although I inserted the Wings into the Nacels and added a small pocket... Was just getting to the formers...