I recently removed the finish from a shell pink Fender Mark Hoppus bass. Not wanting to use caustic chemical strippers, I instead used a putty chisel, and while this was successful with quite a lot of elbow grease, it left a great deal of marks, gouges, and cracks (see picture below):
So what's my next step prior to refinishing? Could I could use some ordinary wood putty or wood filler, like this?

I assume that since this is marked for "alder" (the graphic says "ash," but I'd be buying the one marked "alder") it would do the job and it's solvent-based. So I would just wipe this on and scrape off the excess with a credit card or hobby knife, then move on to the sanding and sealing step.
Do I have this right?