[Elecraft] K4/0 questions

[eric norris]

Hi gang,
How much internet speed will be required to operate the K4/0 at each end?  
Might it be possible to operate the K4/0 itself from a mobile hotspot in CW mode, and how do the bandwidth requirements vary by mode?
My apologies if this has been asked before--I didn't think I would be buying one with my vacation QTH stuck at 3-5Mbps DSL.  I wasn't paying much attention.  But now I have fiber there at 300-500Mbps, and the possibilities are blowing my senile mind...
Thanks and

73,

Eric NF6S