For a level 30 build, don't get too crazy.
21/15 and max everything out. It is a very solid, basic, and well rounded build and that is not a bad thing.
However, on your weapon choice I might recommend the nordic war sword over the champion. The champion (imo) is more for cavalry and thus is longer and slower than the war sword. For pure infantry combat, the war sword is slightly better due to its faster speed and shorter length. Ultimately, the difference is so small you may not even notice but it is there.