Please don't recable such a pristine set. They'll lose quite a bit of value and the stock R10 cable feels pretty awesome anyways. You can use it in your studio if you want, just be really careful with them since the wooden cups can get scratched or chipped. These are my favorite dynamic headphones, nothing quite like them. Enjoy :)
If you plan to keep it for a long time like I do, you will have to get it re-terminate (not re-cabled!!) with a balanced connector. The R10 will always sound best in a balanced mode. The improvement from stock to balanced is very noticeable and is at least 20%. I kept my 9.5+/10 condition R10 in stock form for over 5 years, but finally broke down and get the cable re-wired with 4-pin XLR and never look back.