I need 4 PDF documents converting into Adobe InDesign for print

I have four documents in PDF format which I need converting into Adobe InDesign and ready for print. They are brochures/print material for an exhibition for the company I work for.

There are two parts to the project:
1. Convert 2 documents into InDesign and combine them into 1 larger document to be 12 pages long.
2. Convert 1 document into InDesign and be ready for print
3. Convert 1 document into InDesign and be ready for print but also change design slightly to be similarly branded like the other 2 documents.

The content is all there however it may be that one or two images are not 300dpi in which case please discuss with me if you have an alternative.

The timescale is short, I need it done by 14:00 tomorrow afternoon.

Any questions please let me know.
Matt