Matt, I did my krag the other year starting at almost the same place, just old rusted receiver (sans the plating that yours has). It cleaned up real nice. I posted here start to finish on my work, but most of the pics were lost in our great shutdown. I think after all my parts, including a NOS bolt from grandpasgunparts, new wood from prestigious in
Canada
that has already been mentioned, and a new criterion barrel, I think my final cost was ~$1200.
I have an extra stock from a local shop I didn't end up using because there wasn't enough meat on the forend to properly fit the lower band, and I bought an extra criterion barrel because I could, and I knew they wouldn't be making anymore. SS-firearms sells repro front sight bases you will need to hand fit and silver solder. I slow-rust blued all to perfection, even the extra barrel. A kind member on this forum mailed me his finish reamer.
For an action wrench, all you need is a very large (24" handle) crescent wrench from harbor freight, wrap the jaws in aluminum tape and position carefully.
The prestigious stock was well made. Outer profile, especially the forend, was a bit fat. Inletting was ok, although not as much material. I would have preferred more to work with. There wasn't really much I could do. The fit was good enough, but I would have liked more material to make it perfect. there was not enough wood under the tang, and I had to glue in a small piece of walnut and shape it down (can't tell it's there now). Jesse at prestigious kindly accepted my feedback, so I think the ones he is making now are likely better. I've been thinking of doing another, and would buy from him again when I do.
Word of caution when fitting up...you need to fit the lower and upper bands from the top of the stock after you balance the inletting. The bands must fit snuggly and contact the barrel, but without binding. The proper amount is so that the bands won't slide off by hand, but comes off easily with a very gently light tap of a plastic hammer. Also, the front of the new criterion barrels are slightly larger diameter than the originals, requiring the upper band to be open up slightly. Save your old barrel, tape a piece of fine sandpaper onto it at the correct spot, and use it to open up your upper band until you get a perfect fit on the new barrel...if you go that route.
I have only seen 1 original stock come up for sale in the last several years. the price was not worth it.