if u check my resto thread in resto room, mallard green s2, u wil see my shell was prepped and sprayed start to finish without ever leaving my garage, and its come out gorgeous, and its all down to the prep, and also the fact that 1 of my best mates is pretty damn good at this whole bodywork thing lol

basically we got the filler work done etc, and then got the bare shell in lechler ti green tint high build primer on an afternoon, and left that to harden for a few days, applied a guide coat, then went at it with 800grit wet n dry, until all orange peel was gone and the surface was as smooth as poss. same process for the panels done separetely in a mates garage. all in all just the time for preping them with the 800 to a standard ready for paint took a good 8-10 hours with 2 of us going at it. all by hand, no d/a use as its a bit of a heavy handed method for something that really needs to be precise

this is assuming u get it right 1st time, until the primer hits, its hard to see any imperfections, so if u do find any filler imperfections etc, theres more prep for you, especially if more filler is required, as then u need to apply more primer, and re-prep the area etc

im no bodywork expert, and so clearly i wudnt b the fastest at the job, but i cnt see u gettin the finish u want with the rushed schedule, unless of course im missing something and ur a bodyshop guru on the sly lol