CJJ Berry is a little dated because when he was making his country wines there was no good commercial sources for many of the additives we now use (nutrients, tannins, acids) and the yeasts he had available were far more limited than the yeasts available today. But his approach is not particularly "dated".
I'll leave your other issues for others to respond to but there is not really any substitution for an airlock though , today, you can find airlocks that are "solid state" in that they do not need any liquid to create a barrier. They simply allow the build up of CO2 to escape and when the gas has been expelled the design of the airlock is such that it closes and seals the fermenter until the gas builds up enough pressure to force it open.
Starters may be necessary in brewing but the wine yeast you buy has enough viable cells to ferment the volume of wine suggested by the lab culturing the yeast. Of course, if your pitching protocol kills or maims a significant proportion of the viable cells then you may need a starter.