O.K.....
Lot's to think about - so, I am going to leave it in the fridge today, and cook tomorrow. I agree with the 10-12 hour timeframe. And -the 135F temp sounds good to me. This will give me time to grind some fresh horseradish, combine with a little garlic, and some of my spicy Guiness mustard for the crust.....
Will cook it Monday!