If the roaster wants your business, they will custom roast. We do custom roasts and house roasts, depending on what our customers want. If the roaster is passionate about roasting and keeping their customers happy, they should do custom roasts for you. Just let a roaster know what your plans are and they will tell you the truth, whether or not its what you want to hear!
Need help finding a roaster that will custom roast, email me at email@example.com, I can help you get on the right page.