Possible Clues:

• ''In a perfect world . . .''
• English friend the writer would put first, in theory
• 'If everything goes right . . .'
• I trade extremely lucratively — in theory
• In theory
• Fish is given to friend in a perfect world
• Lie with Lady Dotty in perfect world
• Kiddies regularly team up, in theory
• "In a best-case scenario ..."
• "If everything works out ..."