I am being given 5 gallons of wort at 1.051 and 25 IBU. I want to do a mini mash to add flaked oats, increase the batch size to 6 gallons, increase the OG to about 1.065, and bump the IBUs just a bit (about 10 IBU). Is this possible and if so, how do I do it? I'm having a hard time doing the...