10 # mono would be to light in my opinion. Most everyone i know and myself uses 30# power pro with 6-8 ft 20# flurocarbon leader that way we are all at the same depth when you get leads from someone else. Dont lose many fish to break offs. I use to use 14# fluro and had a lot off break offs on big fish. also dont go cheap on swivels or use to small sweivels. It all makes a difference at the end of the day. Nothings worse that getting that 30" walleye to the back of the boat to just see him swim away with your 13 dollar jet diver and 6 dollar spoon.
Good luck