I have an 1820-D here, the other day I hooked up a howse 5'
mower to it just to cut & blow the leaves off a building site next to my barn ,and it wasnt pretty!
It was just to clunky on the back getting around the trees I was ripping the bark off a few.
And on the side hill I gave up.
A 48" would be much nicer,and my wheels where on the wide setting too.
If I had perfectly flat ground ( no problem)
But it wont cut real tall grass.
stay with a 4'
Ern. <><