[Inkscape-user] Creating a book cover.

There are lots of topics I need education on in this task but let me start at the end and work backward. I will import a file into Scribus and produce a file in pdf x/1a:2001 format using a particular icc profile that limits ink coverage particularly in rich black situations.

Now considering all the objectives, cmyk presentation of colors being paramount, what file format is optimal being saved from Inkscape 0.91 and imported into Scribus 1.5.0. I see three candidates: svg, pdf, and tiff.

I'll be asking a similar question on the Scribus list. Many of the gurus on the lists are fluent in both programs.