HI, as i am half way through my build of my A3 cnc machine, im asking you guys for help as i am useless at these kind of electronics, so far my seach has come down to this kit,

http://www.diycnc.co.uk/html/system4.html
is this a good choice? im hoping to machine alluminium, would 3.1nm steppers be powerful enough on 5mm pitch leadscrews?

As you can see i would like a plug and play so i cant connect it all wrong lol

Any help would be appreciated :)