I've done pretty much all of what you described above, and the my experience has been that none of it makes much difference. Pretty much everything settles to the bottom of the primary after 3 or 4 weeks. Then just siphon to a bottling bucket or keg.
The technique I finally settled on was to pour my cooled wort from the kettle into the primary through a strainer. For me, the strainer is really more to aid in the aeration of the wort than to strain out particles. I quit siphoning. I just didn't have the patience. Sometimes I use Irish moss, and sometimes I don't because half the time a I forget to add it. I have found that it doesn't really impact the beer much unless it is a really light colored beer.