Otay, What I've got here is a shallow-depth 4U rack. It houses a 1U 20A power strip from Tripp*Lite, a 1U steel shelf, and a 2U 4-channel Behringer power amp. My iPad is clamped to my microphone stand using an IK Multimedia iKlip2 keeping it within arm's reach at all times. I have a ac/usb power adapter that I plug in near me with a kick-ass right-angle lightning plug on the end so that the iPad is forever charged. I turn off the auto-lock when playing so the screen is on and MasterFader is active the whole time.
On the shelf I have my Linksys router, the power supply for the DL1608 and an AirPort Express. All of these are strapped to the shelf's vents with fat zip ties. They're also pre-connected to the power strip with shorter cables to reduce clutter/weight/confusion/space. I have the cat5 and power adapter cables for the DL1608 zip tied together at the right length so I just pull them out of the rack and plug them in together without having to fish for them in the dark.
The Linksys router provides the wireless connection and DHCP services for the DL1608 and for the AirPort. I have the wireless networking disabled in the AirPort to simplify the setup. I have SSID broadcast turned off on my router to keep random people from attempting to access it. It's got a key code too, probably WEP or WPA, can't remember which I used.
The Airport is setup as an apple AirPlay target so that I can stream music from my iPhone during set breaks - keeps the iPad out of that function. The audio out is ready to plug into channels 15/16 quickly when I set up, and I have those channels combined in all my show presets in MasterFader. I have my phone set up to access both this wireless network and cellular data simultaneously so that I can stream Pandora or iTunes radio from where ever I am.
I use active speakers for my FOH, but my monitors are all passive. The 4-channel amp gives me the ability for, yup, four monitor mixes any time / every time. The green patch cables just stay connected to the amp's inputs and are ready to plug into the corresponding Aux outputs quickly. My P-Touch labeler makes it all simple. All my speakers have 1/4" plugs, the amp has Speakon's, so those adapters are in there full-time. They're also labeled for "no-brainer" convenience. I label both ends of my speaker cables and the inputs on the monitor speakers, too. Not because I am stupid, but because it's just one less thing to process during setup. Plus, if the bandmates are feeling helpful they don't need explanations - "plug #3 into #3 with Cable #3 and put it in front of Darren." My outputs in Master Fader are then renamed to match. Aux 1 is "Dave Monitor" and so on. Faster reactions in the heat of battle. Playing bass and running sound simultaneously is brain-consuming, so any thinking I can do in advance, sitting at home in my pajamas with the time to test and re-configure things, makes things go more smoothly at the bar when drunk people want music. At the end of the gig, all those short cables just fold up inside the rack's endcap lids and away we go.
The whole thing is awesome, but a little heavy at about 50 pounds. I could save weight with a plastic rack, and I wish I could find an aluminum rack shelf (for a reasonable price), but those are minor quibbles of the dumbest kind. I love the setup I've got, it's been a massive improvement over the old 1-box Yamaha PA that served me very well for years. I bought my DL last April and built up this rack setup over the past summer and fall.
, DL1608 ordered - 
