help finding charlie a home

HI, My name is Kathy and I am new to this site. Anyway, I rescuced a 3 yr old Border Collie, His "so called " owners moved and left him tied up in their back yard. After 2 days my Mailman brougt it to my attention because he know from from my mail, im sure, that I help animals. I get the normal animal rescue group donation letters. LOL Anyway, he didnt want to call the animal shelter becuase he know that if the dog was not adopted within a week or less depending on how crowded they are, he would be put down! So I brought him home, feed him, and boy was he hungry and thirsty!!! Took him to my Vet and had him checked out. Then had him fixed, made sure he has all his shots... now I need to find a loving caring home for him. I would keep him but I already have 2 large dogs and 11 cats and live in a very small one bedroom duplex. So, please anyone out there with a bigger house and nice big yard and a very big heart could please help me find a home for Charlie. Thats what I named him, I have no idea what they called him but he seems to like it. He would make a great agility dog. he is full of so much energy!!! And so much love to give!!