As far as accessories, I'd buy a good assortment of sanding discs, and plenty of them.
As far as accessories, I'd buy a good assortment of sanding discs, and plenty of them. The last thing you want to do is use a pad to death because you're out. This will waste your time and won't leave as good of a surface finish. As for which grits, I tend to use 80, 120, and 180 grit the most, with 320 reserved for between coats of finish.