Lightweight Full-time Chicken Tractor

I'd like to build a chicken tractor for about 5 hens that is lightweight enough to pull by hand but that the hens will stay in full-time, has nesting boxes, and can keep predators out. Does this sound unreasonable? Any suggestions? Thanks!

I bought a chicken coop with attached "yard" at Tractor supply that I put together and then put inside the main coop building with new chicks in it, to get them used to the older hens, etc.  It could easily house 4 or 5 hens and also could be very easy to add wheels and a pull handle of some kind.  There is a 2-place nesting box off one side and two different doors.  The "yard" is under the house and out in front, so no real reason it wouldn't work.  I have large chickens, so I would feel ok about 4 in there.  This thing was on sale for $99 a few years ago.  There are so many out there, and some that people don't need anymore, it may be just as inexpensive and easy to use these, since wood is so expensive these days...I will try to attach a photo.

We use the chicken tractors in this video:
https://www.youtube.com/watch?v=WbzIpwEcMBU

They work great! We just used cedar instead of pressure treated lumber and installed some roll away nest boxes so we don't have to actually enter the coop