It's hard to help you pick schools based on the limited info you provided here. But I'm not sure that you need an MBA to help you achieve this goal. If you're looking to lead big projects -- esp. at your current firm -- and have built a track record of success, my advice is to keep doing what you're doing. An MBA would be most helpful to you for switching careers, but it doesn't sound like that's what you want to do, so it may not be worth it for you.
If you do think you need management training, see if your company will sponsor you in a part-time program. That could be ag ood way for you to grow as a business leader and keep growing as a project manager in your firm, too.
Scott
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Co-Author, Your MBA Game Plan