Yes, pull a Data Sheet, and walk the pin lists for the part to identify the pins involved. You could answer your own questions..
Typically present in 100 / 144 plus parts due to larger pin count needs of the external bus interfaces.
For expanded flash, look at parts supporting QUAD / OCTO SPI. Most F4 don't. Perhaps F412. I'd personally look for newer parts.
Here's the datasheet. Hit Ctrl+F and search for "FMC" and "FSMC".
Can also use CubeMX to sort chips by peripherals present, such as FMC/FSMC.