My suggestions for you:
First if you want to make 198, diet to 205-210 then water cycle to 198. Research how to water cycle. Losing 12 pounds with water cycling is fairly easy. I have used it for as much as 20 pounds before.
Second: Control how much stuff goes into your mouth. Dieting is fairly simple. Want to weigh less, eat a little less. Want to lose weight quicker? Run some hills, flip a tire, swing a sledgehammer, etc. Dont over think dieting as a strength athlete. Eat alot of protein, a moderate amount of fat, and fill in whatever remaining calories with good carb choices.
The biggest part of dieting is to learn what works for you. A 80% Paleo diet works wonders for me, letting me shed fat while still eating fairly close to maintainance. Experiment, find what works for you, and stick with it.