If it is possible for you to try the bedding for some time, it will be better. This way, you will know the comfort level that you will feel with it. Try to ask the seller if you can get a sampler of it so that you can bring it home.
Super king beds are becoming increasingly popular, but they are only for the bigger room. You spend a third of your life in bed, so make sure that your bed choice reflects both your personal design tastes and is large enough so you can stretch out comfortably.