If you are going to run inline planer boards then run 10 or 12 pound mono. I run 12 pound Trilene XT. The mono hold better in the clips, is less expensive, and the stretch will help keep you from losing fish.

Tru trip divers cannot be pulled behind inlines as they pull too hard. For running harnesses and spoons All you need are some 2oz. And 3oz. Inline weights. Run them 4 to 6 feet in front of your harness or spoon. Make up your leaders from 20lb fluorocarbon with a snap swivel at each end. Use this chart to give you the depth setting desired.
http://www.rednekoutfitters.com/inli...ght_chart.html
The key is to target the bait about 3 to 5 feet above the fish. Walleye always hit up not down. So if you are marking fish at 20 feet, try to make your bait run around 15 to 17 feet deep. So if in this case you were running 2oz weights, you would run them about 40 to 45 feet back and 3oz about 25 to 30 back.
Crank baits such as Reef Runners and Husk Jerks can be run right off the end of the main line with no weights.
Hope that helps.