Given the ingredients the OG should be around 1.096 to 1.100! It would seem to me that the fermentation is limping along and it would benefit from a warmer environment. I would consider one of them fancy carboy blankets from B3 http://www.morebeer.com/product.html?product_id=16674 I might get one this year if Santa will be really cool! I have it on very reliable sorces the he got me a wort chiller already 
Cheers,
Brewbear
Cheers,
Brewbear