Thank you MrMehh, I was looking here for an answer very often since I asked my question. I really wish to say thanks to your help. Could I ask you some general advice/tips on the 600D raw shooting please? and which sd card do you use?
no aliasing and moire were obtained shooting at 5x? or with which camera settings?
thanks a lot again! have a good day! 
I used SanDisk Extreme SDHC 45mb/s cards, 16GB & 32GB. The 90mb/s cards don't make a difference because of the internal write limit of 20mb/s, although it will help copying the files from the card onto the computer via internal card reader or USB3/thunderbolt readers. But I wouldn't go below 45mb/s either just to be sure.
Some tips would be to prepare yourself, know the ins and outs of using RAW, what settings you use, etc. What I tend to do is use ND-filters so I can open up my lenses all the way which purposefully creates a softer image (depending on the quality of lenses you use, I use vintage lenses) which will help a little in getting rid of moire and aliasing. Just as with H264, the lower the ISO, the cleaner, sharper and better your image will look. Also make sure you've got the knowledge and experience of handling the post process (conversion, proxies, grading, editing).
I convert using raw2cdng, note the c which stands for CinemaDNG. Those work natively with DaVinci Resolve which you can use to grade and create proxies. The latest version of Resolve doesn't have any issues with pink dots or dead pixels anymore. My footage looks absolutely wonderful in it. If you have any more questions, feel free to ask

Maybe other people can learn a thing or two as well.
Settings I used:
Audio OFF (We used a Zoom H4n for external audio)
Canon menu --> Video mode --> 640x480 (30p)
FPS override to 23.976 fps
Global Draw OFF (no ML histrograms, camera settings, waveforms, focus peaking or zebras, etc)
RAW Video: 1408x528 (2,67:1), buffer warm-up 32mb, no extra hacks, canon preview mode (~240-250 frames)
What I also found was that oddly enough official Canon batteries work better. The first part of the shoot I used my original battery which gave me the full 10 seconds I needed but in the middle I changed battery to a cheaper alternative and it all of a sudden couldn't record longer than 100 frames. I don't know if that was my fault or it not being warmed up or just coincidence, but I grabbed the official battery from our BTS camera.