You'll acquire decorations (and tastes in decoration) as time goes on. I'd focus on the bare essentials (a place to eat, a place to sleep) and fill in the rest later on. You'll be staring at your computer screen anyway, so why bother with paintings? 
Question: does the OP intend for this to be your first house where you expect to spend a decade or more of your life, or your first proper home out of your parents' house?

Question: does the OP intend for this to be your first house where you expect to spend a decade or more of your life, or your first proper home out of your parents' house?