Printing

Can someone give any pointers as to where to start with printing landscape astro photos.

The kind I'm talking about are 30 second, highish ISO shots with a foreground in silhouette and point stars above.  But basically wide angle, dark sky, point / short trail stars.

I have an Espon 3880 and we print on matte paper stock with matte ink - that much is set in stone.

The most fundamental thing I guess is how "black" the bulk of the background should be?

I can't imagine you'd want to push the sky down to a literal (0,0,0) black, and if you want any detail in the stars the most of them won't be blown white - so what kind of spread are we looking at?  Should you expect a "few" stars to be blown, none of them, most of them?

I know this is highly image specific, so I'm talking about general approaches.

Also, printing swathes of jet black can lead to so much black ink that it becomes "shiny" and brighter than other parts of the image.  I forget the term for that.

In reality - how "black" is the sky at night?  Am I right to assume it's actually quite a way off of pure black.

Thanks!