Unless there are extraordinary circumstances, I'd put down coarse gravel (#3 here) and then top with crusher run. With sandy loam, drainage should not be a real concern, and you probably won't need geotextile fabric underneath the #3. But site conditions will tell you -- if there are any areas that get soft, you might want fabric to keep the #3 from sinking.
I have one neighbor with very well drained soil, and all he did was put down crusher run over the scraped-off topsoil. Against my expectation, it has done just fine. I think he later added #3 in one soft spot, but the vast majority is just crusher run directly on the subsoil, and has done fine.