This is a Sram PC-1 chain, a Chris King aluminum sprocket, and a generic chain tensioner.
I am wondering if there is enough chain wrap here. If i take another two links off the chain, the wrap will be better, but the tensioner will be very wound up, and i'm wondering if that will be a bad thing (long term damage? Excessive friction?)
Incidentally, it seems to me that this chain tensioner design is kind of bass-ackwards.. Wouldn't it make more sense for a chain tensioner to be tensioned the _other_ way, so that it would push the chain up. This would _increase_ chain wrap, and at the same time allow a shorter chain! (true, derailleur hangers have that little ledge for the spring to catch on to in only one direction, but i don' think that's a big problem. I can think of a couple easy ways to get around that..)