Ohhh so I only have to use 1 HC4050 in total
instead of 1 for my flash chip and 1 for my SD.
So do I connect the MOSI(5V) or "Flash MOSI"(3.3V) (Best to rename it 3.3 MOSi and 3.3 SCK) to the SD card as they will use the same MOSI wire, just will use it when they're called to by the program.