glass baffles sizes for sump/fuge

[joesfiddy]

i have a 30 gallon tank 36x12x16 i was wondering what measurments you had your baffles cut would 11 and 7/8 be ok for the width or do i need to have it a lil bigger? and i plan on using the aqua c ev 120 or 180 and they say they can sit in sump up to 9 inches so have the height of the baffles cut at 9 or can i have them cut at 10 inches and put skimmer on a 1 inch stand ? thanks