Do you work on widetek 12 or 25

I would like to know something about widetek 12 or 25,

Let say..I do have an image 12x12 inch wide, while scanning, at 600dpi my scan gonna be 7200 pixels..
May I magnify scale at wideteks setup and scan said image, at 600dpi, so I may have scan 14400 or 21600 pixels wide, if yes..how many second will takes to scan such image? I can magnify any scan working on Epson 11000xl, but that scanner is so slow.
Tnx