My question, I am wanting to make an NPC Arkanian dragon mixed with with Sith Alchemy used to create sith spawn. This dragon will be larger than say a Skyrim dragon, but not a massive giant that makes things unreasonable. It will be made from an egg of a Arkanian dragon that through Sith Alchemy it was fed life through a ritual that killed many force sensitive and energy vampires and the dragon in the egg absorbed it. The dragon is very strong and it's scales are force infused and able to protect it from weapons and the force (not diffidently...I am still working on how much.) It not only has the power to breath fire, but also a Dragon's Below which is a dragon version of a force push. I am still working on weaknesses, but one weakness is in order for it to "serve" someone that person must chop off their own arm at the shoulder with a certain sith sword that heals the wound to prevent bleed out, feed it to the dragon, fight and defeat the dragon with one arm. If the user is successful they get a dragon arm that is nothing special in ability and appearence, but what it does is link the dragon to the user. If the dragon is hurt, the user is hurt; if the dragon is killed, the user is killed.
My question is how long should the dev thread of something like this be? I plan to ether make multiple threads or one big one that includes, the discovery, then research of finding and defeating, the search of the sword needed to cut off the arm, and then the fight with the dragon.