What I have found with dogs that have been in shelters or "on their own" is that they have not had as much to eat or as often as they like so they tend to eat everything in sight until they get used to the idea that food will always be there on a regular basis. So yes I would get a separate bowl right now and try to get him used to the idea of eating only from that bowl now. As he gets used to you and your fur-kids and they get used to him, you might gradually be able to use the one bowl. I have 6 bowls down and usually there is food in them. They eat when they want and aren't too particular about who is eating out of what bowl. We did have to revise that a bit when Snoopy started on phenabarbitol for his seizures because it made him hungry all the time and he really put on some weight. We also have 3 water bowls down.

This is very exciting! Can't wait til you get "Woody" home and we can start hearing stories about his adjustment to your home.

Oh, and some pet stores carry what they call long lines that are I think 50 feet so you can have them run well ahead of you. Might be something to see if you store has too.