Just my 2 cents;
I don't like the double 25mm shafts !! In CAD, it's an excellent design, but in the real world this type of setup will give you nothing but headaches. If those shafts were mounted on a machined and ground gantry it would be fine, but since you plan on mounting it on an aluminum (alloy) channel that was manufactured by extrusion, the channel will not be perfectly straight and true.
Another issue would be the 2500 IPM !! If you build something that fast, forget about putting a router on it because will have zero torque.
Like I said, just my opinion.