I am saying up front: I don't care about tripping Knox. All I want to do is root the phone, put the best bootloader on it, and install CM11.
What should I know prior to doing this, and are there any downsides?
I ran slimkat for a week on my phone before I switched over to hyperdrive. Slimkat just came out with an update so I may go back to that. Hyperdrive runs smooth for being TW, but my only gripe is that the rom (or TW) requires a whopping 6gb right off the bat whereas slimkat was only a few hundred MB.