I really like the colors - the quilt looks comfy.
I don't know what type of quilting you should do. First I would wonder what batting are you using? the batting will dictate how close you will have to quilt.
My last quilt that I finished I did straight line quilting..... cross hatch on a 45 degree angle. Each line was about 2-1/2" from eachother. I was happy how it turned out and it wasn't too difficult to do