The photo worked.
Thats a fair amount of mowing every week. I would want at least 6' finish mower.
The CK 20 is nice but I think a 60" mower is all they will run.
The 3054 will run a 6' mower, but they are not availible with a mid mount mower, only a 3 point finish mower.(I run a 3 point finish mower and it works fine for me).
A DK 35 is availible with a 6' mid mount mower or can run a 6' or 7' 3 point mower.But they are a fairly large and heavy tractor. I use mine for field mowing and finish mowing and if the ground is wet it will at times leave some tracks in the yard, but nothing that bothers me.
I'm attaching a picture of my DK 35.