I recently went the same route and added a boy (Brando - also a retired show dog) as playmate to Ruby. If it goes anything like it has gone at my house, you are in for a blast and so is Ziggy.
A campsite would be good for them to roam around. When we take on vacation, I also make sure to visit any local pet cafe so they could eat food we usually don't cook.
The coat looks gorgeous - it's just the skin…I have noticed since it is persisting it down here (and cold - well it is Summer...) that the flaking is much better - I wonder if the flat is too dry for him? It has got central heating...which is till occasionally switched on - and it's nearly June :(
There's one that comes to our dog park named Rocket and he's very fast and focused on retrieving. I have yet to see him play with the other dogs. He's never mean or anything just not interested in play.