You look really good. Your back width is awesome, and you even from today you have 9 weeks, so it seems like your ahead of schedule from what I'm seeing, but I'm only speaking from minimal experience in seeing female competitors. A tan would obviously be of help also. As far as your legs, coach's advice made a lot of sense to me. If that's a natural place for your body to store fat then that'll be the last place it'll disappear from.
As for the real question though, carbs are the best thing in the world for building and maintaining muscle. Yes, the best, even better than protein. In competitive mode I understand you are wanting to cut, but assuming you are losing the general 1/2 ib - 1 ib per week I personally think you should keep carbs as high as you can. Besides, I'm sure you're well aware, but for a figure competition it is possible to go in with your body fat % too low. I don't think you're in danger of that right now,but depending on how quickly you are dropping fat it's something to keep in mind.
I'm definitely not an expert, but I've competed before and been around female competitors, and that's what I took away. Hopefully you've hooked up with someone that has a lot of knowledge.
Also, You're very pretty. I know that's neither here nor there, but that doesn't hurt you none for sure.