Proper way to keep live rock for 3 months?

[newreefer_59]

hello fellow reefers.....I am in transition to a smaller aquarium, but not buying anything for 3-4 months, however I do have about 25 pounds of live rock I'd like to keep for that tank, due it being very cool in shape and look. To keep it properly, can i just store it in a smaller tank with the water I used from the tank I am shutting down? If so, should i do water changes on that water every few weeks until I am ready to setup a new tank? I plan to place a power head in so the water does not get too stagnant, but would it require any lighting while being stored?

Thanks!