Hey everyone, I have decided to take the plunge. I bought most of the parts and tools, but I was curious about grill height. I am not doing a dome lid and I was thinking two racks and a diffuser plate. My charcoal basket will be about 15" because they only have one length at Lowe's, but I don't think I will ever fill it all the way up. Also, will 1.5" screws be long enough for 21.5" grates (these are a lot cheaper than Weber's). I have a 55 gallon steel drum. Thanks in advance.