Just to avoid overall issues, I would certainly recommend "re-asking" this at saberforum.com.
Three things I can say--it's true, the picture you have is indeed pretty small, and it would be hard to tell how all that works together since I THINK you don't show what pins on the Obsidian everything is going to.
Second, in my opinion, you'd be better off wiring your Li-Ions for 3.7v at double the mAh, vs. 7.4v, due to the LED you are using (Rebel, ~3.4v fwd). You wouldn't really need the constant current driver this way--at this point, that would just be leeching more voltage (and space) that isn't necessary.
Thirdly, there is and has been a wiring guide section for Obsidian for weeks now, over at Saberforum. I can't speak for other forums--they may or may not allow or post a wiring guide, I don't know.
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