it is an amazing kite. I have 12, 9 and 7. If you are not going to be kite surfing waves there are other kites that will do the same at a better price. When you are learning
you will crash the kite many times. It is best to buy used
You will need a kite the relaunch very easy (NEO does it amazing)
That will take you upwind (NEO does it amazing)
About the size it depends of the winds speed at your beach.
When kiting you need at least 2 kites because the wind speeds are different everyday.
You don't want to make the mistake of flying the kite on strong winds because you have only one kite.
The wind would not kill you but the object you are going to crash into may do it.
cheers
Jose