I would say that you could mash around 155 and be fine. The oats and crystals are going to add some mouthfeel as well. I would add the molasses either at the end of the boil, right before chilling, or a couple of days into the fermentation. If you boil the molasses, you'll end up with zero flavor from it and the simple sugars will energize the yeast and dry the beer out. Other than that, I would say it looks fine.
Without question, the greatest invention in the history of mankind is beer. Oh, I grant you that the wheel was also a fine invention, but the wheel does not go nearly as well with pizza.
- Dave Barry