You are looking at around 80 to 90 inch pounds, aka 7 ft lbs. Use common sense on the order of tightening, like start in the middle of each side and work across and away from the middle and you should be fine. If you end up at the end of each flange for your last 2 bolts, you should be good. Then go over them all once more in the same order. Do you have a torque wrench that goes that low? if yes, great. If not, then go easy on the bolts, that is hardly anything for torque.