I use ARCH Linux with systemd (systemd is now the default init system, Arch Linux is receiving minimal testing on initscripts systems.) and awesome or Gnome. The latest LibreOffice is excellent and does the job required of it!
Gimp version 2.8 (Stable) and Inkscape 0.48 is pretty awesome as well! Use the two in conjunction with each other. Calibre for you books.
OpenShot 1.4.3: OpenShot Video Editor is a program that creates, modifies, and edits video files. Banshee for your music. I have Adobe Reader 9 installed it works OK.
Dia is a gtk+ based diagram creation program released under the GPL license. Dia
is inspired by the commercial Windows program 'Visio', though more geared towards informal diagrams for casual use. It can be used to draw many different kinds of diagrams. It currently has special objects to help draw entity relationship diagrams, UML diagrams, flowcharts, network diagrams, and many other diagrams. It is also possible to add support for new shapes by writing simple XML files, using a subset of SVG to draw the shape.
It can load and save diagrams to a custom XML format (gzipped by default, to save space), can export diagrams to a number of formats, including EPS, SVG, XFIG, WMF and PNG, and can print diagrams (including ones that span multiple pages).
For your PDF options look here there are quite a few options: http://en.wikipedia....of_PDF_software
I don't know if all this will help but good luck in your quest!