With that said, the datasheet for the MCP4911 seems pretty clear that it IS using SPI and not I2C, where did you get that?
I think I confused myself. I was looking at the MCP4011 before the MCP4911 and the MCP4011 states it uses I2C. I assumed all of the MCP identifiers use SPI but apparently that's not the case....

SPI and I2C are not compatible with each other and SPI devices and can not share bus with I2C devices. If you're using the MSSP module in the PIC (which can do SPI or I2C but not both at the same time) for the SPI chip then you're left with the software I2C commands - which can use "any" pins you like. Some PICs have two MSSP modules so you could set one up for SPI and the other for I2C.
So can you have all of the devices that use SPI have common SDO, CLK, SDI, etc and then each SPI module have discrete chip select lines?