Just go slow and you will figure it out. Everyone is different depending on how much stomach their surgeon left. Believe me, once you over do it and get sick you will know the difference! Good luck to you my friend - it does get easier!
I think you look great! I'm your height, and have been told my goal weight could be anywhere from 150 - 195. Don't get hung up on the number - how do you feel? Are you able to physically do everything you want to? Can you buy regular size clothes now? Do you work out regularly so are strong and toned? Those should be your goals, not the number on the scale.
Congratulations!