That was a NiceFish recipe, so I would wait for him to respond to be sure, but I could put my 2 cents worth here in case he doesn't. I assume that is a 1kg bag of brown sugar and 2 cups coarse salt. No need to be sea salt, just non-iodized salt like in for pickling, usually coarse. And if you pull the pin bones out of the fillets before brining (yes I prefer a dry brine with no liquid) you will have a 100% boneless product. I think NiceFish has a very good recipe close to what I use. You can add spices to the dry brine depending on your taste ( Cajun, garlic, cayenne, chilli, or?). Make sure you coat both side of the fillets in the brine mix and sprinkle some extra on each layer. Use a glass or food grade plastic container not aluminum and keep cool. I stir or move/shake the fillets around after a few hours and the liquid is drawn out of the flesh, just to make sure everything is coated. After brining you should rinse the fillets quickly under water to remove any excess salt and pat dry with paper towel or a clean dish cloth. I air dry on paper and often use a fan to hasten the pellicle (clear protein film) formation. As far as smoking time, it is to taste. I use 2 pans of an alder cherry chip/chunk mix that lasts about 3 hours and leave in the smoker to dry for many more depending on heat, outside humidity, thickness of fillets etc. I have 3 smokers and they all are different. You will learn the tricks as you go. Maybe try 3 fish for the first batch, refine your recipe and then do your last 3. Good luck and enjoy the rewards of catching and preparing your fish.