I don't think you'll need to do the whole cardio/carb restriction deal. You're only 4-6lbs over. A gallon of water weighs 8 pounds. You'll lose a little less than that. We can get guys weighing 25-30lbs over well under the 220 cutoff with diuretics. It's easier with a heavier lifter and you fall in that range.
If your meet is on Saturday do this:
Tuesday/Wednesday: Eat normally. Start chugging water. You should be taking a piss at least once an hour and it must be "clear" in color. If not, drink more until it is. You should be living in the bathroom by the end of the day.
Thursday: Water restriction. Only sip water to wet your mouth. Have a normal breakfast but taper the volume of your meals up to bedtime. NO BIG MEALS. Take a couple of 20-30 min. walks if you're way over.
Friday weigh-in: Sip water until weigh-in. Nibble on a protein bar. Weigh-in as early as possible. Begin rehydrating and eating immediately. Drink 20oz. carb drinks (Cytomax, Gatorade, Powerade...) every hour until bedtime. Some guys have started taking Airborne or Emergen-C with the fluids to help with water retention. I've had the most luck eating bland food (turkey sandwiches, pasta w/butter, plain chicken...) since I can eat more of it without tasting it hours later.
Saturday: Eat moderate breakfast and continue rehydrating w/water carb drink. Set PR's.
You should have access to an accurate scale to double check your progress. You only want to water restrict for 24-30 hours so adjust to your weigh in time.