I might have a few items.
Word of caution on wheel housings... there may be differences in the service parts vs. what was originally installed. Also, don't feel you need to replace entire panels, it's better to cut out rusted areas (if that's the issue) and repair. Unless you have a high dollar spot welder, it's very difficult to replicate the original appearance of spot welds.
On the front fender, consider cutting out a date code from a damaged fender and welding in. Could reduce your search time as finding a March/April '64 fender will be very difficult. Might have to buy a car to get one.