Don't want to be a Nah sayer and I'm the biggest DIY-er but your not going to achieve the tolerances what your looking for without having parts machined on proper machine and even then I don't think you'll achieve what your looking for easily or at all and it will cost plenty of money.

IMO If you have enough paid work for the machine then I'd look at leasing VMC rather than buying and you'll have it paid for in no time.!! You'll also be up and earning with-in the month.!!