while I will admit this looks great so far and it is looking to be an epic LP, after doing a fair few guitars now I will say orbital sander is not a good idea, a hand sanding using 3 different grades of wet/dry while it is a little bit more work is the best way to go, sanding with a block or clip in palm sander shouldn't take more than half an hour for each grade of paper, I personally use 400, 800 and 1200 for the wood before stain/lacquer then I move to a 1200 and 2000 for final sanding before polishing LIGHTLY skimming the finish with a 2000 grit paper soaked overnight in soap water it has a extremely reduced chance of scratching the finish while taking off the layer of cured top coat lacquer 7 - 10 days after laying final coat