For all this equipment we will need signal cables, speaker cables, mains cables.
There are many discussions on internet about cables and there are many maniacs that pretend they could hear the difference between different cables. Maybe they could but these are exceptions, for all of us a cable that cost 20$ will sound exactly the same as a cable that cost 200$. I'm not saying that quality of cables is not important, in fact is very important but you will never need a 200$ cable that connects your cd-player (even an expensive one) with your preamp.
Here you could find a good signal cable with gold plated connectors
With the speaker cables is another discussion, these cables can really affect what you hear.
A good speaker cable will have a low resistance, inductance and capacitance. Speaker cables must be selected according with their length and the power of amplifier and speakers.
For powers over 200w you will need 10 Gauge (5.2mm2) Wire
For more cables and connectors you could go here