I messaged support directly and sent them details on my door templates and my requirements with regards to mixing in 3D models. Charlotte gave me some great advice and a process that feels more intuitive.
I am separating my model from my door files now. I am essentially building my full design and noting the offset measurements of the model as it relates to my X0 Y0 on the door job dimensions, I delete the model though from the door file - this is where only my vector and pocket toolpaths reside. I am entering that offset info onto the Model job dimensions and this file is set to max resolution. To test that it's right ( my offset info ), I can copy and paste the model into my door job.
This seems more intuitive than placing my vectors onto a smaller model job. I can still preview the full set of toolpaths and send the customer a good preview.
It's funny that my brain is so hardwired to the way I did things before. What feels like limitations at first ( in VCarve ) ends up becoming additional flexibility once I can wrap my head around a process.
Thanks for all the advice so far! I am setting up the job used as my example in this thread, using Charlottes recommended procedure. Fingers are crossed