Don't do it,
One year mandatory jail sentence entering NY with handgun. NY does not issue non resident pistol permits, but you may be treated as a resident of NY based on what you wrote. The county of residence plays an enormous role on pistol permit issuance. Western NY more leniant. I would send it to trustworthy friend or relative when you move back and then apply for permit. Most counties have 6-8 month wait for processing of applications. Not sure how peaceful journey would apply as it needs to be legal where trip begins and ends and I don't think you will be legal in NY unless you move back.
Edit on sending .... Ffl to ffl only!