I want to have a 3 foot wide tractor so I can pull it around my garden paths. My potager graden is broken up into squares that are either 6x8 or 7x9. All the paths in the potager are 3'1". How long can the tractor be and still get around the corners. I'm putting wheels on it so I can move it like a wheelbarrow. I want it to be as long as possible but still get around the corners of the beds. What do you think?