For that few chickens, unless you are planning to add more eventually, I would go with a chicken tractor design. Look at this link for some ideas. They are quite easy to build, if you are somewhat handy. Or I know a guy who does a great job building them who lives in Raleigh... if you're willing to drive. He could probably build what you want for around $200 - 300. With that savings, it'd be worth the drive.
Email me if you want his info... I'm very pleased with the one I just got from him, although I wish I would have had him build it a bit larger now. If you're interested, I can show your pics of mine, or you can see it in the 'Coop Design and Construction' forum here, in the thread titled, 'Heat and light source for small coop?'
http://home.centurytel.net/thecitychicken/tractors.html
Email me if you want his info... I'm very pleased with the one I just got from him, although I wish I would have had him build it a bit larger now. If you're interested, I can show your pics of mine, or you can see it in the 'Coop Design and Construction' forum here, in the thread titled, 'Heat and light source for small coop?'
http://home.centurytel.net/thecitychicken/tractors.html