Well there are a couple downsides to the pi, they are more expensive, you're probably going to have to order one, they need an sd card (which they eat), they need a bit of knowledge (I am talking about easy cold storage for everyone) , they need a tv or monitor.

I think the wifi is not an issue but that is me personally, if it is disabled and stays in a signal blocker bag i don't see how it could compromise security. (Totally open to reasons why)