There will be an orange back fairy wrasse, two clowns, a starry blenny, and a wheelers watchman goby. I have a few corals too but I don't want them to die or put Ich in the new tank. How can I keep the live rock and coral without treating them with meds?
You won't see much improvement as the stress on the fish that will most likely bullied might not be reversible due to damage, though pristine water and no further bullying will lead to healing but isn't likely in the current environment, and the fish not suitable for such a small tank will continue to be stressed until a larger tank comes into their life.
That said, to treat the ich going on you will need to do a hypo salinity or copper based medication. This will require a hospital tank as both will kill your coral. There isn't another option here. Saltwater ich isn't freshwater ich, some salt and higher temp doesn't do anything but be more stressful on fish.