wparsons: and in your example i'd double those 4th gear runs to be performed in both directions. Exactly to cancel out possible wind impact.
But also yes, 4th gear is a bit excessive, at least on public roads. From memory when i recently was on track where at end of longest straight i for first time was able to redline 4th, speed IIRC was 170-180kmh on speedo. Speeding ticket at such might be .. a bit on costly side
