Recommendation as far as what?
CS5 is fine for editing and RAW importing.
I've never used LR so I can't speak to it.
I have CS5 and CS6 (extended - both) on my Mac and I switch between the two all the time. For the stuff I do, there isn't much difference. Your needs may vary.
Recommendation for what? ???
The Canon 5d MkIII has been supported since Camera Raw version 6.7, which runs in CS5, and all subsequent versions of Adobe Camera Raw. It has also been supported since Lightroom 4.1. Is that what you are asking?
Other than that, based on your non-descriptive post, the only recommendation I can offer is to brush your teeth at least three times a day.
Also, please stop shouting. Don't type in all caps.
We are basically the User to User community for Photoshop, so for all things Lightroom, be sure to check their forums if you have questions about that product.