Im not an expert but I do catfish a lot, with more catching than fishing. With that being said, I have only fished a few ponds for them but I would imagine it would be the same. Definitely fish in the evening through the night. Channel cats dont have big mouths, small cut fish is the best thing I have ever used especially bluegill. Chicken liver is messy and doesnt cast well but is definitely a great catfish bait. Also, dont look past night crawlers(my 2nd fav) and stay away from stink bait! I would also use the lightest weight you can get away with, on the rivers I fish I have to use 6oz of lead to even get the bait to stay in 1 spot. In a pond a simple split shot/egg sinker should work. I like to carolina rig(weight,bead, swivel, leader, hook). As for line, you should be more than fine with 8-12lb in your pond. Just play the fish and enjoy the fight if its a nice one. Personally I use braid any/every time I can 30lb is about the same as 8lb diameter... the advantage is obvious. I use a MH and H casting rod, my plastics and jig rod. Unless youre planing on catching a 60lb+ that should be more than enough rod.
If you feel like there could be giant flatheads in the pond catch a bluegill, you can do the bobber thing but I NEVER have luck like that. Tie on a 3-5 oz weight, slit the top of the fishes tail so its bleeding, and send it to the deepest hole in the pond. It wont be able to swim with the weight on it and it will be in the giants face bleeding and looking all tasty! I caught my pb flathead of 51lbs with the exact method above with the bluegill on 30lb braid on a MH spining rod.