Chase,
I know exactly how you feel!! I just sprayed my car last Sunday! I spent 120-130 hours on the rear panel alone!! I've spent 2 years doing bodywork, so having the car in color is a HUGE landmark for me!! So anyways, I can appreciate your excitement. One piece of advise that I can give is to look VERY VERY VERY carefully for small imperfections, like sanding scratches, little nicks (especially on the edges/folds in the sheetmetal). Those things will stick out like lighthouses once the color is applied....trust me on this one. I went over my car for two days doing nothing but closely inspecting for the above and thought I was in the clear. Once I got it to the booth, my neighbor (the body guy who shot it) found about a dozen spots that needed attention!!
As for the fan, make sure that the fan is blowing in, not sucking out, unless you have an explosion proof fan (class 1, Division 1,2 compliant), otherwise the paint vapors can ignite!! Use an air conditioning filter from Home Depot to blow through to keep the dirt down, and wet the floor down before you begin spraying.
I was lucky enough to get the use of a down draft heated booth. After the clear was applied, the cure cycle in the booth sent the temp to +155*F!!!
Good Luck!!
Tim