sounds like you did fine.
if it were mine and i knew nothing about its maintenance history.
I would just start at the beginning.
change oil, coolant, trans/hyd oil,
air filter. tune up
my friend has one just like it, for some reason the front grill radiator screen is hard to get off, so they did not check the front of the radiator, it was full of debris, got the tractor hot and ruined the motor.
get a manual for the tractor so you buy the right oil for the transmission.
the lift levers work different from my old TO-35 so you need guidance on them.
might want to change radiator hoses.
fluid in rear tires, if it has the old cal cloride you might want to have that pumped out and replaced with the newer type fluid.
that little ferg lift or carrier is a find, i think they are a bite rare, so do not let anyone buy it off you until you check it out.