Not sure what your thinking of cutting but I doubt you need a 2.5Kw spindle
The reason I say this is you wont be able to plunge or travel at a speed that will put the kinds of loads on the spindle that will need that level of power.
To put it another way your going to use a spindle that is roughly equivalent to a 5 - 7.5Kw router.
Id suggest you start with a 500-800W unit with a 1.5Kw unit Max
Im putting together a 1.5Kw unit now but that is because I had one spare. If I was to buy one Id get a 500W unit. Now I have a 3.5Kw unit on my big table (not Maslow) but that is able to load the spindle up with a much higher travel rate and a fixed gantry
Take a read of this thread as I post a lot of info on this and the bits needed
Also from the links it appears you are in OZ, not sure where, Im on the Sunshine Coast