Ideas for tennis camp or a tennis pro -- improvement desired


New User
Hoping for some great suggestions. My goal is to improve my a better 4.0 doubles player. I have between now and April, 2020 to participate in whatever it takes. I live in Denver, CO but am willing to travel. I'm a retired adult player.
So first question -- please recommend some high quality tennis camps you have attended where focus is on improvement, instruction, & doubles strategy -- not practicing bad habits with no feedback. I play on hard courts so I do prefer those and know that is hard to find where many of the adult camps are located.
2nd question -- please recommend a great dedicated coach in Denver who can somehow incorporate doubles strategy into private lessons -- hopefully you know this person is great through personal experience.