This is actually extremely helpful and insightful. Thanks for dropping some knowledge. I knew as I was creating the list that I was being extremely vague, but that's because of my lack of knowledge on how game creation works outside of the rpg maker program. Using that system is fairly easy; you hire a coder, someone to create maps, and an artist and you've got yourself all the necessary people. This is a different realm for me, but it's the route that I want to take.
Thanks again for your insight an I will definitely be looking up and creating a BRS
The important thing to remember is the BRS explains WHAT you're trying to do and WHY you're trying to do it. You don't need to know the how yet, because you don't exactly know what you're trying to build and what problem you're trying to solve.
Once you have the BRS completed, this should nicely be summarized into a Project Pitch - this pitch can be used to acquire resources and money, if there's interested parties of the pitch.
The how you go about implementing it will only come after you truly know what you're trying to work to accomplish.
From the Project Pitch, you can begin doing a technology stack discovery, understanding what resources/people you need to hire and when. - From here, you can begin to finally see what financial forecasts you're looking at.