I'm not a big fan of the notches on the sight. If they were well spaced and matched, it wouldn't be so bad, but I'm personally not a fan of the way they are now. You've got the room....if it shoots well and you get the front adjusted to where you need it, you could file those wings down to match the barrel flats and nobody would be the wiser. Of course, the sight itself is pretty cheap to get from Kibler if you just wanted to replace it.
As for the barrel...I have issues. If someone is going to decorate a barrel with filing or pattern engraving (vs. an image, signature or other such), I think it should be done consistently, uniformly and cleanly....there are too many consistent lines, angles and symmetry in the barrel to go at it ham-fisted and not have it turn out looking poorly.
I can't tell how all the notches line up and are positioned, but some the hack 'n file marks are still plainly visible in what you have there. It's unique and I think you could work it into something far more respectable...because right now, it doesn't tick any marks for consistency, uniformity or cleanliness. If you want to try to salvage something unique out of it, maybe mark a consistent end around the barrel using a heavy tape, use a chainsaw file or rat tail file to make all of the "fjords" a consistent depth / width / length and get rid of the coarse filing marks in them. After that, re-draw file the barrel to get rid of the mill marks, re-blue and it could be respectable, if quite unique.