If the X-axis length is still 60" long, then you want a few more legs underneath your table. Find a relevant deflection calculator for the extrusion you are using, and see what your deflection is versus load. You will want to do this for both the X and Y axes.
Plugin your extrusion type, the unsupported span and the load, and it will tell you maximum deflection. In reality, cutting forces will increase your load (hopefully marginally), but you will still want to make sure that the deflection is well within your total error envelope. In other words, if you want to hold 0.003" or better tolerance, you can't use it all up with the deflection in the X-axis or Y-axis support beams.
Note: if your drawing is roughly to the scale I think it is, then I'd worry that your Y-axis is also grossly under-sized as well as your X-axis. The upside is that you can add support legs to the X-axis, whereas the Y-axis has to work with a large unsupported span.
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