I admit I'm not an expert. All I know is we tried to use the IRLZ34N at around 1.7A, 12V CD and it went to 60-70 C very fast although it is supposed to be a low drain-to-source resistance FET. It seems enough to be concerned about when it will have to handle 8-10A continuously in the full setup. But maybe it's nothing to worry about, I don't have enough experience with this kind of light control, coming from the world of DMX.