It is too late now for any use in evaluating whether or not one should stake a position in SLI since we are already in but here is a great post of what to look for in a junior miner.
http://agoracom.com/ir/CopperFoxMetals/forums/discussion/topics/529247-what-to-look-for-in-a-junior-miner/messages/1674438#message
One can evaluate for himself whether or not SLI meets the criteria set forth.