possibly simply because I didnt know I had to 
learning on my own and never taken a real c++ class so im a bit lost.
I found the build.cs file and I am assuming this line is the one that adds the dependency:
PublicDependencyModuleNames.AddRange(new string] { “Core”, “CoreUObject”, “Engine”, “InputCore” });
I am a bit skeptical on changing this file so I may just do a master BP and create child BP’s for the final actors, or just make the BP customizable in the level.
My goal is to be able to play media files using the mediaplayer and I have managed to do that in blueprints and custom hud, would prefer to do it all in c++ but if the declaration is gonna need a large dependency, I think BP’s might be a more efficient solution.
Am I overthinking it?