Brine about 1 hour per pound for chicken. If you need to brine it for 8-10 hours, and have a 4 or so pound chicken, then you can reduce the salt in the brine. Maybe to 1/2 cup salt per gallon of water (instead of 1 cup per gallon of water). You can leave the rest of the ingredients as is. It is no problem to brine in advance, rinse, then keep in the refrigerator until you are ready to smoke.