Well, see here’s the thing–water is very individual. So it could work just the way you say or it might not be the greatest idea. I honestly feel uncomfortable giving you a solid recommendation on that not knowing your body, or what you’re planning to use to drop water weight, or exactly what you’ve done in the past. You’re getting into territory that a paid coach who had taken you through a prep or two would know best how to time things and that’s what I do with my athletes.
Trying to time it exactly with a stranger is a recipe for disaster no matter how well you know your chemistry. You said your body drops water fast, as 8-10 hours is a very short period. But with the weigh in that evening and having to make weight first, I’m not really sure. My best advice would be to try it 2 weeks out and check. A test run saves a lot of trouble and some wasted effort.
My intuition would be something along the lines of this:
Option A: Deplete glycogen ahead of time, monitor weight while fully hydrated against your weight class limit. If under the weight class limit while depleted and hydrated, stay mostly depleted with a limited carb up to come in right at the weight class. Then pound a carb up while dropping water immediately post weigh in. Go to bed, assess in the morning for the show. If over the class limit while glycogen depleted but still hydrated, start the water drop just before weigh in…just enough to make weight. Following that carb up while staying away from water.
Option B: Carb up fully before the weigh in, go dry well before the weigh in. Stay dry through weigh in and night, wake up and assess condition in the morning maintaining as needed or filling up with small amounts of carbs and such.
Option C: Deplete and stay dry through weigh ins. Following weigh ins, drink AND carb at the same time (not one then the other) conservatively. Wake up and adjust.
It all depends on your dry weight. You’re 208 right now, 10 lbs over. If you deplete glycogen effectively and hard, I think you might be able to make weight without drying out a lot (again, all depends on the test run). I would NOT carb up on the test run, I would simply do the drying out to see how you respond as the hours go and how much weight you end up losing.
It’s uncomfortable, but often times easier to maintain a condition than try to adjust up INTO condition.