Best to not dwell on med problems in an interview. Just say you had hep c recently but it's cured and you are recovering... and as for why the move, you can't afford NJ plus you are better off in Carolina's climate. Stay positive.
The disability may get approved, especially if you have to go before a judge later on and can explain why you cannot work. Let the lawyer guide you. An experienced disability firm knows the buzzwords and what not to say. My wife is on, and I was kind of surprised because I thought like you are thinking, that it would never happen.
