Initial deployment is really all about what you want in the water first. Typically i try to get a long line in the water while im sending the probe rigger down. Some days though it may be a wire diver instead of a long line, and somedays it may only be the probe rigger. It depends entirely about what i know about the current fishing conditions (where temp is, where active fish are, etc).
You dont have to run 10-12 rods. As you feel comfortable put another rod out. More lines in the water = more chances of a tangle. And yes it will happen. You havent lived until you have had to untangle a 450 copper and a wire diver. Keep it simple. I would suggest working from the middle of the boat to the outside. Start by setting riggers. These will be the fastest four lines in the water (it gets you fishing faster). If your running 4 riggers then your middle 2 should be your deep ones and the 2 off to the sides shallower ones. Then deploy divers (inside diver first). I use a .5 setting on the inside and a 2.5-3 on the outside. Then long lines (off boards).