I havent had any experience with your model vehicle but here's how id go about it.
Climb under the car and have a look at the size / shape of the oil pan. Pay particular attention to where all the bolts are and how looks like it will come off. Make sure you can get the socket / spanner into all of the bolts just as it is. Also make reference to the manual and the specific steps it says to take. Ie if it says remove the bolt X by removing the radiator... see if you can get a spanner into bolt X without removing the radiator. (of course... dont go undoing them without making certain you can undo them all!!).
Also where was the manual from?? If it was a genuine ford manual then that may be the only way to remove it... but if its a gregories there is a good chance there is another way to do it... Again just look around and see what you can do.
From there you can make a decision as to what to do!