The AV install is part of Ninite, since I use MS Security Essentials. Drivers I don't really do in a particular order (other than graphics going first), and I tend to just install a bunch of things at the same time (so drivers might be installing at the same time as Ninite). Getting security running isn't too high of a priority, because any drivers and basic programs are from trusted sources; I'll absolutely have it installed before normal use, but it's not a big deal for me to be downloading drivers or VLC or whatever else without it.