Worked in PDSR California. Retired in 2010. Moved back to the United States. Yeah, it's a pain in the yarmush. (Obsolete Klingon word meaning "place where one does not want pain".)
Aside from all the firearm specific stuff, go through your possessions NOW and divest yourself of all the extraneous materials you and your lady wife and heirs have accumulated. Clothes you do not and will not wear, the 200 extra pens - most of which have dried out, calendars of the past five or six years, and little mementos you can't place with anything. After over ten years, I'm still asking myself "Why did I pay those movers to drag all this garbage halfway across the country?"
The best of fortune in the move itself and your new location.