Remove the windscreen ... roll car away and roll in another one, install windscreen
Seriously, you do not need an English rolling wheel, but you will need to remove the windscreen ... remove all trim, including dashboard, etc. Far better to work on if everything is out of the way.
Get hold of some cardboard to use as templates ... then get a 6" grinder with a wire wheel attachment and get rid of the rust/paint, etc. Once all gone cut out the rusty stuff and make new panels by copying the cardboard templates.
Remember Ferrari's used to be made out of many, many pieces welded together, hand formed.
If necessary get yourself a bag of sand and hammer the curves into the panel using the sand as support.
And yes have a look at the AlfaRestore site (or if it helps my car

) ... in the end a car is only metal panels welded or otherwise together.
Pete