I should note that I've been reading various articles about planting them in the pots, etc... I have a south facing porch that I could tuck them into... I also have a garage that has 2 giant windows that might provide enough light in the winter... fully expecting another harsh one.

Your correct to wait till spring. I would not recommend repotting them until early spring after they break dormancy, don't make the mistake of repotting them into to big of a container. You'll want to read up on pruning blueberries as well. They should be fine on the south porch -as well as the grapes, I am not sure about the hops.

If you leave them outside at the very least put the pots in the soil. Frequently roots are a lot more susceptible to damage from "extreme" weather than the branches are (both soil and snow insulate the roots normally). I would vote for temporarily planting them in the ground (perhaps even leaving them in their existing pots) and depending on their size considering to cover the grapes/blueberries with straw (and your field mouse situation).

To the best of my knowledge you don't need light once a plant is in dormacy. There are no leaves to use the light. You do however have to make sure that the roots/plant do not overly dry out.

I'm sure you are aware but hops are somewhat aggressive growers and spread out. I personally wouldn't put them in a raised bed near anything else. We find shoots popping up 3 feet from the base of our plants regularly and I strongly believe that their root system pulls a lot of the moisture from nearby soil. For that reason I wouldn't plan to put them too close to anything - especially blueberries that really love moist soil. (My closest plants to my hops are over 5 feet away and I have to water those plants much more than their neighbors that are 10 feet away.)