Hi - I'm looking to make the switch to a DE razor and was hoping to get a few questions answered1) Roughly how many shaves do you get with 1 DE razor blade?2) I currently use nivea for men sensitive shaving cream. If I decide to switch to a DE and use a shaving brush and bowl can I continue to use that shaving cream or do you use a different sort of cream/ointment. 3) Should I master this before shaving my head with it also?