The resolution gain from removing the AA filter is noticeable but not significantly so. You will notice more moiré and stair stepping/aliasing. I'd wait until you aren't happy with the HD RAW output. Not really worth the money now.
The Canon sensors are just noisier in the shadows. It's still better than the other RAW cameras.
For those wanting 60fps, setting the camera to 720/60p, you can then change the resolution 1480x515 @ 65fps, then stretch out horizontal axis by 1.61x, and you'll have better resolution than the ALL-I 720/60p in RAW output for slow motion. It's a bit of work and best done in .RAW.
Another update for those looking to process the .DNG files. Da Vinci has released a new version of Resolve that works very well with the .DNG files. It renders faster than CS6 by 10x! This is a great 2nd step to render out .DNG with LUT Log gamma curves processed output to ProRes. It beats ACR by a mile for broadcast!