I know this is a pretty loaded question with many variables, but I'll be doing my first smoke ever this weekend and trying to get an idea of about how many briquettes I should get started in the chimney. If I'm going for 225 - 250 degrees how many briquettes should I start out with? 15? 20? I have a Smoke Hollow 4-in-1 with side firebox FWIW. I'll be seasoning my grill/smoker tonight so I can adjust from there what I use when I actually put some meat on this weekend. Thanks!!!