Sounds unnecessary to unhook the coil. That’s what the cam lube is for. I would however, recommend buying the cheap oil priming tool. You can prime your oil system just prior to start up to ensure you got instant oil pressure. I think I paid 17 bucks at summit.
Yes I have ordered the pump primer tool I had no plans to crank on the engine to prime it I just think it's odd that i read that in a book after getting all the information I have from here saying not to blindly crank on a new engine