And don't worry about the k/d ratio--in RO, some days you're running around like a chicken with its head cut off trying not to get shot, and some days you are a bolt-action death machine who single-handedly turns the tide of war. It's a really cool game in either case.
If you can pick up UT04 for ten euros, i'd get the practice in now by playing the mod--the cost of RO:O itself is much less than it probably should be for the fun you'll have.