Lets see the model you have now, then maybe I might have a couple of ideas. The "I want to build a spiral that has as many turns as I need" with included morphs is a bit problematic, though. i.e. It's going to have to be 1 object to do the morphs (realistically), but it seems you are looking for something modular. Suppose it could be done as a prop with material zones and transparency, or as a simplistic figure and using body part visibility. My most immediate response would be "are you proficient with any modeling apps?" I just woke up so my logic might be a bit fuzzy until the caffeine starts working.