We have made it really easy to change the spring force on the mirror, this means you can play with the traids off between spring force, speed, and deflection.

more spring force = more speed but less deflection and possibly a taller printer to make up for the lack in deflection

We have done alot of work to make sure when you get your peachy you wont really be stuck with how we built it, were doing our best to make all the important stuff adjustable, easy to swap hack up and change.
The Idea is to make a printer that can be made to work in many situations. This is a big part of why its hard to give good numbers on the peachy, there is no set in stone deflection or build volume, laser power, aperture size. Its possible and in many cases easy to change these things.