Welcome to the Cantina!
You have been given lots of great advice by lots of the "guys in the know".
All I can add is my personal take on these fine blades.
First question, do you really like the khukuri in spite of these imperfections?
If so, are you capable of fine tuning these imperfections out of your new khukuri, and are you willing to try?
Personally, if I get a khukuri that is sound in blade and handle and sheath, but has certain cosmetic, blemishes and flaws, I smile!

It is at this point where I get, in a small way, to be part of the creation process. I happen to have the tools and ability to take care of most any cosmetic blemish I find.
The blades that I have had to work at this way are the ones that I feel one with. The more I do, the closer I feel.

I bought an 18" AK once because it was listed as having a crack in the blade, 1/4" long going up from the edge towards the spine, so I got it for a steal. I ground the crack out, reprofiled the overall shape and recontured the blade sides and edge. When all was done, you could not tell it ever had a problem. I love that Khuk. There is so much of me in it, that I get a special joy taking it out and putting it through its paces. It is a chopping demon.
I guess what I am being so long winded in saying is, Keep it, rework it, become one with it!

It will be more than worth the effort in the end.. Have Fun!!