Painting dilemma (long). What would you do?

Also I need advice on constructing a temporary paint booth which I only plan to use for this project. Since the car is not driveable without glass or lights, even if I could borrow/rent a booth it's not practical way out here in the country.

One problem is that my workshop (inside a 40x30 steel building) has a dirt floor which isn't perfectly level, and the 4x4's of the sill leave a gap of up to 8-10" to the ground. I'm thinking of putting a tarp over the dirt and driving the car onto it, then building the booth around it. I will be removing the hood, trunk lid and both doors to paint them separately - not sure if before or after the shell.

The rafters are about 10' high, so I can staple plastic sheeting directly to them and not have to build a framework. Sides can reach to the ground the same way. For ventilation I've seen articles showing two cheap box fans with furnace filters duct-taped for intake and exhaust. Fluorescent lights are already strung from the rafters and I'll add at least one more two-tube eight foot fixture.

Any ideas? thanks.