I'm at hour 4 on my kettle as we speak. It took me a few tries but i've gotten the snake method down really well finally. She's been rolling at a steady 230 since i threw the ribs on at noon. I used to worry about temps constantly but now i just check it every hour and give em a spray of apple juice.
The kettle isn't as difficult to low and slow on as people think. Got me a drip pan, couple fire bricks and loaf pan with water on the grate over the coals. I use Stubb's briquettes. Haven't been able to figure out lump yet. I couldn't stay below 300.
Anywho....Those ribs look dead on to me.