This gives you a look at the Rams roster and FAs and RFAs. If you assume we will tender all of our RFAs, then we have 46 players on the roster. I consider all 46 to be good enough to make our roster. Plus we will add 5 or 6 players in the draft and probably a couple UDFAs. On the right side is a list of 8 to 11 FAs we might want to sign. According to who we might cut, we can have 35 to 45 million in cap space. That gives us about 60 candidates to fill the 53 man roster. That means we have plenty of depth, a good cap situation, and some good draft capitol.
http://www.spotrac.com/nfl/st.-louis-rams/cap/
http://overthecap.com/position/cornerback
http://overthecap.com/calculator/st-louis-rams/
If you want to play with the numbers, you can use these links to check individual contracts, the salaries of positions, and estimate cap moves. This is just information. You can take it in any direction you want. Maybe you find it useful?
Agamemnon