The screen grab shows the layer gallery open...

"blank pdf file *that has a large filesize*"

Increase your printer spool setting?

Your colour problem may be colour space and output conversion (RGB to CMYK or vice versa). Try authoring in proper colour space and output to the same or manage your colour output through the PDF or printer dialog.
I use PDF Creator with XaraX... have not seen built in Xtreme PDF export.

I also have a feeling the bitmap image is tripping things up for you here. I could be wrong.. (like that's ever happened).

Good Luck, Wayne