welcome aboard, and good post.
I use Weber briguettes and on WSM I can get 16 hours plus if need be, full bed load minion method. Flavour I am not sure it matters as long as using decent briguettes and not the sawdust and stones varitey, I never use lumpwood anymore unless I am doing a hot burn for a short time.
I shoud say too that I am a firm weber enthusiast. Flavour comes fromt he wood smoke, options are wood blocks or pellets, both work great I find, Either staight onto the coals. "One whole log" that is intersting, where did you get that from?
You find a lot of good advice and having gone to smokefest 18 and met lots of people they are great people. Have yuo seen the next event the 1st Northern Tailgate, can you go to that, you will not be disappinted if you do.