Any reason why you FWH and have 15 min additions? I'm a rookie when it comes to FWH, but I would think you would just move all 20, 15 min additons to FWH.
You might want to replace the black patent with chocolate...The BP could be too harsh for this beer.
Sand Viking Brewery
“Happiness? A good cigar, a good meal, a good cigar and a good woman - or a bad woman; it depends on how much happiness you can handle.” ~George Burns