Pretty sure the collective here along with targeted forum searches will get you all of the individual components needed to generate your own FIRE plan.
Which phase of the FIRE journey are you in?
-I don't know what my finances are and don't know where to start.
-I am in debt and working a plan to get out
-I am in the accumulation phase and want to be sure I am investing wisely and maximizing my savings rate
-I have a pretty significant net worth and am not sure if/when I will be ready to FIRE.
If you have read the books and crunched the numbers, you should be in pretty good shape. Do some targeted searches on this site to find threads that relate to your individual questions and I would imagine that it will get you moving along. I used the bogleheads starter process and investment policy statement examples as my reference material for a starting point to write some things down. I also am a spreadsheet jockey and have always tracked my finances that way. I have learned new things about tracking and projecting along the way.
There is no magic bullets for your specific situation. Your situation is your own and no one will have a situation and risk profile just like yours. The journey needs to be owned by you. Writing down your goals helps guide your research. This is a continual education. Many of the forum contributors have been working towards FIRE or have been FIRE'd for 5-10 years or more. Many change or adjust as they learn new things but for most of the accumulation phase, it is a set it and forget it kind of thing. This is a long game. Be patient and build your plan one piece at a time.