4) You might want to consider a Sensor "brush" with fine hairs to lift off some dust that the blower can't get to, before using a swab. This is to avoid rubbing dust across the AA filterthis is good as long as you don't get one of those el cheapo brushes. it's been my experience the cheaper ones while still good at sweeping away dust also have a propensity to shed some of their hairs inside the body and can be frustrating to get rid of.
Blowing with rocket blower is indeed the first choice. When it comes to swabs, pens and brushes, its very easy to make the sensor more dirty than when you started. I learned by experience. Everything must be ultra clean, wash your hands with soap, and then do it again. Almost every thing has dust on it, and the oil from your skin can transfer to your sensor in mysterious ways.
Also be aware that there may be lubricant on the mirror mechanism, and its very easy to transfer it to a sensor pad, pen, brush, or whatever. Once you smear oil or grease on the AA filter, you will be quite disgusted. I've done that too.
However, after blowing $30 worth of supplies and buying a second set of swabs, I did get the job done, and the second camera went nicely.
Just one wet swab won't do it. Four or five seems to be a good number. Throw the swab away after one swipe, The instructions say this, but I had to try a second swipe at first, and was dismayed to see all the dust re-appear.