Mr Big is right and Dr Gould wrong (4,4)

I believe the answer is:

drug lord

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'mr big' is the definition.
I don't know anything about this answer so I can't tell whether this works.

'right and dr gould wrong' is the wordplay.
'right' becomes 'r' (common abbreviation).
'and' is a charade indicator (letters next to each other) (I've seen this in other clues).
'wrong' indicates anagramming the letters.
'dr'+'gould'='drgould'
'r' after 'drgould' is 'drgouldr'.
'drgouldr' is an anagram of 'DRUG LORD'.

'is' acts as a link.

Can you help me to learn more?

I've seen this clue in The Guardian.

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