Yup, this is definitely a challenging model to print (for the reasons you describe) and it requires your printer be well-tuned to work properly. That said, the four hinges whose ends touch the build plate should be the "easy" part -- if those hinges are fusing then my best guess is that your printer is over-extruding in a pretty significant way. As I've suggested before, I would recommend printing some of the many calibration prints you can find on Thingiverse, as those can help you more quickly identify problem areas. Also, different filaments can have radically different performance on things like overhangs, so if your printer is tuned well it may be worth simply trying a different filament. Hope that helps!