I have a table design that I am working out which uses a steel gantry structure (mainly since I have much more experience with steel than wood). My CAD model tells me this will weigh around 90 lbs. without the router (36" x 48" table). My question involves the weight of the gantry and how accelerations will affect the machine. In other words, will it be too heavy for my 425 oz-in motors to control during higher speed operations? Also, do you think I am exceeding the skate bearing rating with this much weight? Please advise.