Face the fact that some days the kite will be just too powerful to use.
Big kites lift more and travel slower and are often used in lighter winds, whereas small kites generally lift less.
A kite travelling faster usually generates greater lift. Too much lift and you become airborne, not enough lift and you, the buggy or board will not move.
Most kites need only a small amount of wind to fly and it is even possible to fly kites in no wind.
For people with little or no previous kite flying experience, it is a sensible option to choose a small 2-line trainer kite.
For those looking for an imediate challenge then the four line kite could well be your best option.