storing homemade potato chips
Anything susceptible to moisture will go stale if exposed to air long enough. Storage will only get you so far, depending on the temperature and humidity in the storage area. In a restaurant kitchen, I don't have to tell you that both are rather high.

I'd suggest blanching them after cutting. You could basically cook them through then store them in a relatively air-tight container for a period of several days. When a customer orders chips you'd just drop the blanched chips in the deep fryer long enough to brown and crisp them. This is what essentially every restaurant outfit that serves chips and/or french fries does and it works well. Experiment with blanching temperatures and liquids to see what works best.