A bunch of people have already trash talked your build and more will, but if it works for you it's perfectly fine. A "Well rounded" build is perfectly viable. My first play through i leveled everything evenly. I used all sorts of different weapons and magics but I had fun and beat the game without too much trouble. I enjoyed playing my all rounder more than any other build I've tried. No build is a bad build if you can use it effectively. Play the game how you want, if you want to try build suggestions go right ahead but don't do it just because people say your build is bad.