Answer: gobig

AnswerCrossword Clue
GOBIGPull out all the stops (both parts of this fit the theme)
GOBIGReach for the stars
GOBIGShoot the moon
GOBIGShoot for the stars
GOBIGPull out all the stops
GOBIGShoot for the moon
GOBIGStrive for an epic effect
GOBIGNot hold back