I used Chocolate Malt and Midnight Wheat in this porter at a 1:1 ratio. I really want the Golden Promise to still shine. I have not used Midnight Wheat before but it is supposed to be ultra smooth and not bitter.
The Founder Breakfast Stout is really well balanced and uses Kona coffee and Sumatran (from what I've read). Kona coffee is very mild and almost not coffee IMO. You can get it pretty cheap at Trader Joes. If you are interested, make sure it says 100% Kona because most Konas are a blend. Sumatran on the other hand is very complex and rich and it now my first choice for a cup of Joe.
I put some Honey malt is this porter which might be a mistake but I thought it might balance the coffee out.