Well patching the connectors can be a trial and error game. I sometimes had no red-line coming up sometimes all were red.
Make sure, you have another computer ready, to undo your changes, if you end up with a screenlock. From there on, you go step by step forward and patch one connector after the other. Hackintool is great, but I would advise you put your plist-changes into your config.plist with a different editor. This way you can tell easier, what you change, and what not.
In the end I used Opencore Configurator as it comes with the basic boilerplates for framebuffer-patching. Only use, if you use Opencore - this will break your clover-configuration if you use clover for sure.