I highly recommend preparing a Build Plan, this will help you address your requirements, purpose, theme, and decisions before you start the build.
Here's what I prepared, this is like version 10+++. Start at a high-level and fill in the details (or change them) as you do your research. Again, FFCars is your best source for a FFR build.
MPTech Build Plan - revision 9 (and counting)
If you want to stay on-budget and not extend your build time, Stay Off of these forums! There are too many good ideas here that will cost you more time & money! (this is tongue & cheek, but true!)
Good Luck, this is very rewarding!
I personally think persistence and problem-solving is more important than mechanical skills. If you want it bad enough, you will find a way to make it happen.
If you go donor engine, trans, rearend, I suggest to have them rebuilt or professionally inspected (you really don't want to pull the engine / trans out of a finished roadster (no fun!).
Re-manufactured Steering-racks are cheap, especially if you have a core. Don't use 20+ year old parts. It will bite you.
One of the reasons I went Base-kit, was I could purchase the kit and start the build earlier. If I had to save for the complete kit, it would have been 6+ more months. Also, don't buy the motor / trans right away, they will just be in your way until you are ready for them.
As far as space, I built mine in a 2 car garage during the winter with my wife's car parked next to it. I did pull it out for a couple milestones (dropping the engine in and installing the body). Also, pick up some tire dollies from Harbor Freight. Once you have a roller, it is very easy to wheel it around or out of the way!