looks awesome......Did I miss what you are using for a sump?I ask cause I would suggest making a bracket and hanging the apex probes from it so they are accurate and dont get damaged. (I can show you what I did if you want) As far as skimmer I saw you were thinking of the reef octopuss I have an SRO 3000SS and love it ... Its a beast ... in sump and no separate feed pump.
The stand is gorgeous and looks incredibly sturdy .... I built mine as well....
Brian
Nice stuff bro! Glad to see things coming along.
Hope to visit your setup in person.