Once you hack the flange off getting the race out cleaning doesn't really matter , more work$$ , just torch it off .

Migh be a good idea to buy the replacement axle end that will use the mopar factory tapered bearing before cuting the axle tube that way you know how much not to remove ? Do it with a little extra so the person the welds it duplicates the length.

Might be a good idea to just take it down to the weld shop still intact and have them cut it off so it's welded back at the proper length ?

But if you get a new housing then you can just cut it anywhere to get the axle out of the chunk.