I have a boneless rib roast, about 6-6.25 pounds. I would like to try the low heat (200 degrees) method of roasting it. Do I first sear it in a pan on the stove? Do I season it and then just put it in the oven? Also, any thoughts as to how long it should be in the oven? I think I read the internal temp should be 130 degrees, and I do have a thermometer, but I need to know how long it might take a roast that size to get to 130 degrees, if I'm roasting it at 200 degress. Thanks for your help.