2IC is correct ...
As a contractor, a very familiar situation.
Time to ask the "what colour do you want the new SQL data base" type question.
Just do it,
but
as your you have outlined its a large amount of extra work with extra risk
, and your already busy,
Present overtime authorisation forms before you do the work,
and remember to thank them
and to have a good Christmas.
Biting the hand that feeds IT
