Optimistic about a flight on the wrong fuel (7)

I believe the answer is:

hopeful

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'optimistic' is the definition.
(similar in meaning)

'about a flight on the wrong fuel' is the wordplay.
'about' is an insertion indicator.
'a flight on' becomes 'hop' (I can't justify this - if you can you should believe this answer much more).
'the wrong' indicates an anagram.
'fuel' anagrammed gives 'eful'.
'hop' placed inside 'eful' is 'HOPEFUL'.

Can you help me to learn more?

(Other definitions for hopeful that I've seen before include "Prospect" , "Promising success" , "One wishing to succeed" , "Optimistic, expectant" , "Wannabe" .)

I've seen this clue in the Evening Standard.

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