OK that was a cute little chapter and well done on the marriage. I'm still ever so curious as to what the Weasley reaction will be to the marital status of Mr. Potter. In addition, you have Neville to consider as well as the Dark Mark reaction to Voldemort's death. Compounding it with whether Snape will seek out to have his mark removed as well as Harry's willingness to remove it. I love your idea with utilizing the ghosts to counteract the Inferi. I would suggest a trap for the werewolves at St Mungo's involving powdered silver as a means for defense, however you will have to work out a delivery method. As far as your ultravoilet defense to battle Dementors, Hand crank batteries like the ones used by the US Army during Vietnam error for communication would be more idea and would be chargable in a magical field. That or utilizing insulation to ward against EMP.
Food for thought. Now crank out another. :)
Geovanni Luciano