Hi, i can do what you want as well, and ready to do any test before starting.
i hace Scitex Scan dram system "Ever smart" model.
you can try with me and you will receive all you want.
i can scan different kind of source (plane paper, Negative, transparent films or photos, .. etc.) and can output to different format files to be useable in easy way.
also size until A3, and if you need to scan more bigger size, i can do it in correct way.
pm me for more details, i can help.
check my profile.
Regards, George.