First of all, it will be a heavy brute wont it....soil and water, water and soil, grass clippings and so on...that'll be some weight to deal with.
Then it will be one bin...and as the contents percolate, and finally come to something useful, it will be mixed with the new add-ins...so that has to be separated.
Where to put then the good stuff --from the bad.
Then there's the problem of getting the contents turned over...that's a must if you expect good decomposing.
And it has to be given water...water has weight..
Is the thing going to be rolled around in an attempt to mix the contents....then ask some brawny man to lift it...
better get insurance.
There will have to be an opening in the bottom to extract some cuz you wont be able to do that outta the top.
Try using a spade in a garbage can in an attempt to lift something out...as in soil. Cant be done, there's no room unless the bin is put at an angle--like a cement mixer, that's one way to mix the contents and be able to lift out some of the contents.

If you can instead make a bin--two's better/3's best out of old wood/chicken wire....there's directions for making one all over the net.
Then you have a better way to separate and use.

A 55-gallon drum might be considered for a rain-barrel--lots of soft water for plants.

All in gest fun.

But it is true, such numbers of barrels in a confined space such as a backyard is the farthest thing that one would consider just to put garbage in.

I would suggest instead, get an old heap of a car, send it to Mako and park it in the backyard, then fill it to your heart's content. Now you've got something to admire.

All kidding aside, those barrel composters are a lot of work, it is just soooooo much easier to create a circular bin, and my experience, it also works wayyyyy better.

I had three barrels and they did work as prescribed, but as was said, it was much easier and efficient to use wire mesh bins.