Take to body off, put it away and forget about it for a couple of months. Next, one of the most talked about issues of late has been "where does this panel go?" Mark each panel or take a picture of it before you dismantle. Take note of what goes over or under each joint. Then take them all off and organize all of your parts. Did you opt for the FFR heater? If so you should cut the panel (firewall) before you install. Make sure you take note of the vertical 3/4" dash hoop. It may conflict with the plumbing for the heater. Then pretty much follow the build manual. Try to finish one section before moving on. Do all the front before moving to the rear. The manual isn't too helpful for some issues but the forum is great for help. Many of the builders have their own build sites and you can look up their progress and get ideas there. One question on the forum today is "where should I put my starter relay"? Well, it's your car and you can put it any where you want. Most (including me) will say in the engine compartment near the drivers foot box. Good luck and just ask when you need help. There are about 2000 FFR guys out there and someone will have an answer to each of your questions.
San Rafael Mike