So, let's sum the situation up here.
The plan is to do a transatlantic drag with four single-engine jets, each with a fuel fraction equivalent to an F-16 or Typhoon with no external tanks, and higher wing and span loadings (indicative of cruise efficiency) than either. Hence the northern route and around 10 tankings per aircraft.
The aircraft has very seldom landed anywhere except Fort Worth, the flight-test and training centers and its main operating bases.
There have been two engine-related flight standdowns in the past month.
Given that there will be hordes of senior international air force officers at RIAT and that the U.K. may plan to announce its first large order at Farnborough, there's no pressure on anyone at all.