I was a beginner long time ago. If I have to do it again I will buy two year old kites same make and model. The kite must flag out from one line and super easy relaunching.
I will get Lithiums from Air rush. For the board will have to be a 140 x 44 to help with the planning and also two years old model or more
Do not buy C kites . You will spend all your time trying to relaunch the kite.
Try to buy from a kite shop so you can go back to them for warranty issues or advise. An most important take lessons.

welcome to the sport.