You know, looks can be deceiving. While this airliner appears to be quite small, its actually longer than a 747.

Activation group 1 for booster engines.
Activation group 2 and fire weapons key (alt) for reverse thrust.
Activation group 3 for drogue chute.
Activation group 4 for open sky facilitator AKA missiles.
Activation group 8 to turn on and off pitch boost control.

Takeoff procedure:
Booster engines on
Thrust set at 30%
Trim at neutral

Climb:
Pitch boost off
Booster engines off
Trim set

Supersonic climb:
Begin at 10,000 feet
Pitch boost on
Engine boost on
Trim set

Supersonic cruise
Pitch boost off
No pitch inputs
Engine boost on
Trim set

A typical Atlantic crossing between Heathrow and John F Kennedy International: two to four hours depending on traffic.