Figures larger than the page, as well as large amounts of figures, can
go into a "page of floats". That way, they don't mess up the text
So, how about a section giving tips on how to (strategically & technically)
proceed with large figures (typically exceeding the page borders but still A4)
with the requirement that they should appear close the first reference ...
Now, if you need to position images exactly, consider not using floats.
If you put them in the text, then they appear in the text where you put
them. This can result in bad page breaking, and a need for some manual