Hi Craig, welcome to the forums! Are you aware the current Red Hat release is Red Hat Enterprise Linux 6.0? You can download a 30 day free trial from http://redhat.com
RHEL 5.3 was released in 2009 and definitely will not have the latest drivers for your MBP 2011.
You might also consider Fedora, a free community distro sponsored by Red Hat. Fedora is a cutting-edge distro with great support for recent hardware.
Sorry but I do not have personal experience with the MBP 2011, I suggest using the forum Search feature for answers.