Start off by simply going to the County Seat, get a DBA and a EIN. Then you can put your plan to work while still working your day job.
I did it for 10 years. You can't really be creative full time anyway. You will burn out before you know it.
Start of with just putting in an hour or two a day on your content. I found that early morning worked best for me.
I would get up around 4am and start writing and designing.
If I waited until I got home I was usually brain dead and could not produce anything worthwhile.