Hasta La Motion!

This is my first post so please go easy on me 😉

I’m primarily a motion graphics artist but the editing facility I work at is being asked to do more and more Vfx work.

The situation I have is as follows:

A program the facility is working on has some greenscreen effects stuff in it that has been Shot on RED camera. The program output its 1080 and the greenscreen has been shot at Either 2k or 4k resolutions. The RED footage was originally conformed into the avid at 1080 and one of our Online editors has attempted to do the key and composite. However he’s had some real struggles with spill etc so it has been suggested that we in Gfx now do the vfx. We’ve
Successfully got the original RED media into Premiere using an .aaf from the avid with links to the original media. So I now have the 2k & 4K r3d files on my premiere timeline, which is great however I’m now ready to begin the keying and am wandering what the best approach would be.

I know you can alter the source settings of the RED media and this is where my knowledge especially regarding colour spaces etc comes to an end. The red media as it comes on to my timeline is at the settings shown in the attached file. As you can see the footage is really quite bleached out and I was wandering if
There was anything I can do at a source level to help overall before keying in after effects / Nuke?

Also, I’ve been scouring fourms etc looking for tips and help and some suggestions I’ve seen is to work on dpx File sequences as opposed to the red files. Any thoughts or advice on that? Any performance gains on working
on dpx as opposed to r3d file? If so how can anyone suggest I get the dpx sequence out and at what settings as when i’ve tried thus far the greenscreen file sequence looks remarkably different to r3d file?

Any help or advice on this would be greatly appreciated. I’d really like to get this right with regards to the colour Space etc as its not something that we deal with often but are likely to have to do more of in the future.