If there's a spot with grass out front, get a portable sign that you can stick in the ground during open hours. It would probably be a lot cheaper than an illuminated sign.
I'm selling mine too (fujis, 179). They were never used since I cracked my hip and missed the whole season (i use my old skis at the beginning of the year to warm up). They never saw too many days of skiing, so make an offer. dirt cheap.