I'm pushing 235 7/8 lbs

at 6'0". Been riding for a year.
Last year when I started, Paul and a few other were riding Cabrinha Contra 23.5's. And I picked one up at the shop. It's a good kite and if anything will fly it will, but it's gotta have some air. Less than 8 or 9mph it's gonna fall out of the sky but so will most others. The problem with a kite that big is it's literally a blimp falling out of the sky. And that is a lot of kite to have fall on people at a beach, and it's a ton of kite to relaunch when it's wet.
Like I said, 8-9 to keep it in the air. I've found I just can't ride it lower than about 11 mph and a big board. After about 16-18 it's way to much to hold an edge. I can ride it but not having any fun.
My next one is an 18 Ocean Rodeo Bronco, good flying kite and I can use that in about the same wind up to about 20. After 20 it's getting too busy and I'm pushing my luck. But the 18 is a lot quicker than the 23.5
Next is an old 15.5 Cabrinha access, love that kite and it's on from about 15-25. 20 is the sweet spot on that one for me.
All that said, I'm not a bow kite fan. I'm not crazy about bridles,etc... but they are incredibly versatile. Huge wind range, and back to that relaunching thing. I've flown Paul's 16 switchblade after being on my 23.5. And rode about the same, the difference is I have to work the 16 just a bit, keep it moving. But I can ride his 16 when I'm in my 23.5 range. And the 16 is WAY EASIER to reluanch than the 23.5.
Also, that just wanting to ride thing does end and you will be wanting to jump etc.... It may take you a bit, but smaller kites are quicker and easier to jump on. I can make the 16 S/B pick me up in the same wind I'm riding the 23.5 but I can't move the 23.5 quick enough to get up very well, and if I blow it and crash, it's a lot more work to relaunch.
That gives you an idea of my wind range on C shapes. My personal advice, if you can swing the cash, is go with a bow kite if you're looking for the most versatility from one kite. But everyone will tell you there is no one kite answer.
Hope it helps,