Is it redundant to take all three?
Nope. Krill Oil, while lower in EPA/DHA, has nice stuff like. is completely different, though I would personally never use it.
PES - Get Enhanced
The above is my own opinion and does not reflect the opinion of PES
I've ran CLA before and I know a lot of people do, but I don't really think it does much. Krill is some good stuff, I like Krillipid Balance by Genomyx.