Can't argue with that. I still use FDM as well for a lot of models - currently running an old Ultimaker 2 and a BCN3D Sigma D25 for the bigger batch jobs.
The latter is mostly stock but the UM2 is pretty much unrecognisable from when it was new now; a real Ship of Theseus. Bigger gantry, uprated board/head/feeder and tweaked Tinker firmware to suit. Shoved a Pi with Octoprint in there too.
While you can get flex & specialty resins, you are right that you're certainly not printing them alongside the regular stuff in one run like you intend to, unless the model is redesigned in multiple parts. They are also priced to suit :|
Will be good to see what you come up with. Almost all of my prints are the work of others these days. I'm not much of a designer and the furthest I go with CAD is putting terribleness together in a 12 year old version of Sketchup ๐
Alternatively, Tiny10