sail size
your rig dimensions are I- 30, J-10.30, P-25, E-10. For a 180% sail ( the ave. size spinnaker) that is 494 sq. ft.If you're looking for a used sail and you can't find one with these exact dimensions, figure you shouldn't go more than 33 ft. for your luff, 29 ft. for the leech, and 18 ft. for the foot. (remember that the luff is always longer than the I dimension or the luff will be to flat) that wouldn't be exactly 180% but close. (if you plan on racing, your handicap can/will be adjusted if bigger or smaller)