Differential pairs or single ended signals for 1m cable
At 16 MHZ ordinary ribbon cable should be fine, I'd look at using PATA (hard drive) cables, because they are available off the shelf cheaply. 

I'd interleave the 16Mbaud data, with power and ground wires 

 G d P d G d P d G


To reduce cross-talk and also separate the clock from that by a little bit

all the other signals as slow enough that they should not need any special treatment other than possibly low-pass filtering.