Your smallest girth is just 2" inches smaller than me! (5ft) and your largest- Well, lets just say I would be dragging on the floor if I had to hold it up.....
My 16.1hh shire cross at his fattest was a 60" plus a girth expander, now 9 months after moving yards he is 54" but would be Ok with a 52" he looks so much better too.