I haven't much to add, since the two people I think know the most about the Enfield and its defarbing and who hang out here (Curt and Craig) have already chimed in. But I will speak out as a consumer of defarbing, which may be useful for others here who are contemplating improving the accuracy of their Enfield repros.
1. The cost: You can probably add 100% to the cost of an out-of-the-box ArmiSport Enfield if you take it all the way. My personal recommendation is to let someone who knows what they're doing handle it. As Craig has mentioned, you need the right stamps, tools, etc.
2.) reblueing: Not the nightmare I expected, and I was able to reblue mine successfully. I had purchased a partially-defarbed Enfield from Lodgewood that left the barrel with the same "painted on" blueing it came with from the factory. If you build a bathing chamber out of PVC pipe, you can do it. Of course, you can save yourself a ton of effort and BS if you have it bright. There is a lot of evidence that CW troops took off the blueing, since America has traditionally had its weapons bright. I will not offer and opinion on that, since the unit you're part of may have had blued weapons. But I don't recall ever seeing event guidelines that said "all Enfields must be properly-blued."
3.) the stock: I didn't reshape mine, that was "a bridge too far" for me, but I did strip off the poly finish it came with and restained it. One small correction to Craig's point about using BLO (boiled linseed oil). The modern version has had the esters boiled out of it, so it will not dry on your stock. Instead it will form a sticky residue. There is a recipe for reconstituting linseed oil to its Civil War, more or less, version that includes spar varnish and Japan dryer IIRC.
Finally, is it worth it? Generally, I would say "yes." I feel better about my Enfield now than if it were OOB. A more or less properly-defarbed Enfield is worth more for resale than one that isn't, which is just a repro in that case. Do you have to go all the way? This hobby is a journey, it depends on where you are on the road.
Treasurer, The Rowdy Pards
'In the end, it's the history, stupid. If you can't document it, forget about it. And no amount of tomfoolery can explain away anything that makes history (and living historians) look stupid and wrong."