I would say yes it is doable. I would also say if you are set on the performance rechamber for 300 win mag. If you are dead set on the cartridge either do as you earlier suggested or buy a 300 h&h.
I personally would not be able to alter a perfectly good 30-06. Instead I would find an excuse to buy the second rifle and all the while I am saving the money. Be awful nice to the significant other. Jmo.