Q24W or Q24C

[NAVYCTRC]

I recently purchased a new e97 MFD to replace the C70 on my cruiser and would like to continue my electronics upgrade with a Quantum Radar unit. Besides the lack of an included cable is there a difference in the two Quantum models? If I purchase the Q24W, is there an interface to be able to add a cable later if desired? With the wifi option do I need anything else to connect the radar unit to the MFD or to the boat? Do I need an existing wifi signal on the boat for the units to communicate? Thanks in advance!