I've been doing pretty much all those tips for years. Okay, I might go on the occasional spirited run and I probably won't ever stick strictly with the highway speed limit, but aside from that, reducing consumption and emissions in normal driving is a priority.
When appropriate, I turn the engine off at longer stoplights or RR crossings. Not as brilliant as a Stop-Start system, but gets the job done. Of course, I only do this when the conditions are right (full battery, warmed up, not too cold outside....)