I would sell it and not invest a cent in it. Unless it were part of my family history. Then, cost does not matter as much.
As for your blade - it is not what I could call good. A crappy Meiji/later blade or a broken/hagire blade, shortened and mounted. The nakago is very very bad, a sloppy job, like so many in the Meiji period.
Put it on eBay, buy something decent, learn. Actually, read and learn first, then buy something decent.
BTW - could you be more specific - what do you mean with "nice hamon"? Nice like what? It is undulating, yes. What else is nice about it? Do you understand what a good hamon is, and what it looks like? I can assure you, it is not the pattern which makes a good hamon.
Also - the tsuka seems to disturb you. I don't think it is a great piece, but you should be careful in general, when you see such pieces - one day you'll have a valuable koshirae destroyed, because it must be clean and new.