1, use autobrake, every single time
2 Your figures sound good. Try and manage your energy so you don't have to use much power during the approach. Level decelerations make it easier to manage, but for noise reasons, they are getting unpopular. Many airports now specify CDAs, so you must manage descent and deceleration at the same time to keep the figures looking good- not so easy.
Always remember to allow for HWC in your slowdown calculations- it makes a big difference.