Man I feel for ya...
One of mine lays across my feet everyday when I check the board ( she's there right now... I had to pet her up a little when I read this.)
It's the older one I'm really worried about, Border Collie mix - he's 9 and has been through so much with me - He loves the boat and the water, he went through the divorce with me (she could have the house and kid, I just wanted my boat and my dog!), he's moved 9 times (I live in Kentucky now too) and 4 different states with me, I am really dreading the day his time comes.
Terribly sorry to hear you lost him.
I know when mine goes I wouldn't change everything I use his name for - passwords and such, - don't change the AV.
I'm not sure about the collar/tags/leash - maybe passing some of that on would be a good thing.