if you're going to make adapter plates skip the F150 and go for Mustang rotors & calipers. 2015 Mustang rotors are 12.4" with a low offset. that makes room to sandwich an adapter plate in between the knuckle and anchor bracket,,,,,BUT,,, it pushes the caliper out farther to hit the wheel. the wheel would need cutout for calipers.
or you could make an adapter for radial mount calipers, such as Wilwood. that would keep rotor offset the same, and you could choose the rotor size.
HINT: 1998 crown Vic front rotors are the almost a direct fit, they are bigger at 12.5" diameter and a bit thicker.
you can do 12" front rotors with all factory parts, but it won't be cheap. that would be 04+ steering knuckles, rotors, calipers, anchor plates. I think the 98 hub/bearing will fit the 04 knuckle, but 04 doesn't have the hole drilled for vacuum hubs. the boss is there, just not drilled. it would also need the seals. the locking kits should work too, that would eliminate the vacuum.
or swap up to 04 CV/axle units & the 04 hubs/bearings. that would give you live axles n o more vacuum stuff.