Hi !!
If ur up to have a functional machine why dont bye a FiereballCNC v90
u can se it at the ADs above. OR at
http://www.probotix.com then also order the stepper motors and the electronic-Kit for the v90.
Then if i was u the rest of the money on a Kress 800 plus an extra card from the probotix guys (for a 4:e axle). Is there still some £ left then also an other stepper motor..
In this way u have things from the both worlds, something that works and the machine to build the next one :-)
that's my cents in the amount of possible ways and solutions
/oopz