Listen to the "Going Pro" series on The Brewing Networks' podcast/radioshow "Brew Strong". It has answers to every question you have asked, plus a lot more useful and relevant information.
I did an Imperial Amber that was inspired by Third Party Candidate (Eagle Claw Fist and Three Heads Loopy split 50/50), but was actually very close in flavor to Great Lakes Nosferatu. I used some biscuit, which added a nice complexity to the beer.
OG of 1.075
13.5# 2-Row
1# Crystal 90
.5#...