The Xigmatek Gaia can use two fans. It comes with only one, but includes the rubber mounts for a second fan.
I recommend against anything from CM because I do not believe in supporting a dishonest company. Competent technical reviews (e.g. at HardwareSecrets) have found that some of their PSUs still have liar-labels, or claim to have protections that are actually missing. That's dishonest, and I will never buy another of their products, no matter how good. Fortunately, in any market where they are found, competitors offer similar (or better) products for similar (or less) money; you won't take a hit in the wallet for refusing to support a dishonest company.