Loads of good advice here.
Depending on how cashed up you are a light wind board will get you kiting in sub optimal winds at a fraction of the cost of a big kite.
I fly my Ozone 10m Reo in wind that I can just get it into the air (~12 knots) and ride a Shinnster*. I can stay up wind mowing the lawn doing this. The trick is to build apparent wind. But, that said, I am going to buy a 12m Liquid force Solo (single strut) to get me out in even lighter wind.
Lots of options these days