Wow! They suckered you in Doug! IMO, the extra probes are useless. (ORP and Salinity?)
I would have gone with this (
http://www.reefsupplies.ca/online-st...-Grade-PH.html) and added on a Break Out Box and maybe a 2nd EB8 power bar.. would have given you more useful functionality for less money.. The break out box can control SOOOO much stuff.
It's no wonder you're so confused on how to set everything up... LOL! You got everything!