Hello, here is my new machine

[Doddy]

Just to add to the try-before-you-buy argument:

I similarly "upgraded" a similar sized router (UK Marchant Dice) with stock unsupported rails, and the result with a 800W water cooled spindle was substantial Z deflection towards the bed centre as well as distortion on the X rail under load. (okay, my choice was easy as the original router failed and needed to be replaced)

Understand the sensible limitations of the machine before splashing out on upgrades that won't effectively work.