Is the top obviously veneer (looking from the back, you could probably tell).
If it's veneer, you have to be very careful about sanding.
Still, the those scratches on the top, I'd seriously think about taking some 300 grit, or maybe 600 grit to it to at least get the scratches out. If you go back with the same reddish stain, you shouldn't have to sand down enough to completely take the stain out, just enough to even things up.
Just be careful sanding veneer. I know, I sanded right through the veneer I'd put on the front of my buffet project. But, I little clever staining, and I was able to hide the screw up well enough....