The purchase and setup of the Woodmizer was painless and informative. I spent a couple of days at their plant in NY and they made sure I knew exactly what I was doing before I left. If the Lumbermate had been my first mill, my learning curve would have had many more bumps in it. For the Lumbermate, we pulled up to a loading dock in Buffalo, loaded the boxes in and left. Unless you have Lumbermate do the work for you, be ready for a lot of bolting things together.
Air tools help a lot.
If you're at all mechanically inclined, it's not complicated, just time consuming. I purchased my Woodmizer without hydraulics and very quickly built a set of hydraulic lifting arms. I'm not sure I would have paid for the full hydraulic package, but the lifting arms made a huge difference in speed and efficiency. Being on the ground, the Lumbermate doesn't need them, but having a loader or lift of some type would be a big help. When I ran the Woodmizer, I did all of my own setting and sharpening.