Hello,
This seems straightforward enough but it would be handy to know what the macro does. E.g. does this macro create output somewhere? Are those Excel files that get opened changed by the macro?
Generally these things shouldn't make much of a difference but they might need to be thought about if the script is run by an automated process rather than a real person.
I've said 7 days in case there's some discussion then changes, etc. By the way, freelancer.com is enforcing a first milestone of ten Quid.
Cheers.