if the runway has the markings (ie 3lines 2lines 1line slanted towards the exit i use 100kts at 3lines, 80kts at 2lines and 60kts at 1line and you should enter the exit at 45kts as recomended.
for the 73ng either autobrake two and reverse or autobrake three and idle reverse are more than adequate for braking. if i am more than 10 kts above the 100kt point the braking needs to be heavier but i wouldn't go for the exit if above 60 kt at 1 line.
hope that helps