How to plan...

First look at what you have to work with.
Second decide what you want to accomplish within a certain time frame.
Third be realistic as to what you can afford in regard to what you wish to accomplish.

Then whatever you decide take pictures before you take anything apart,and only work on one thing at a time so you don't get overwhelmed.

Remember it's a hobby not a job. You are doing this to relieve stress not create more. If it stops becoming fun step back calm down and go back when your head is clear.

Cliff I have been over ten years on my latest and last project.
I could have done it in a year if I wanted it to be a job.
I do it to relax.