Surprised Letter!!

Wow.. today i received a letter from HDB. Invitation Letter, Asking us to go choose our flat. Yappie! Can have our own flat le.. Heheheh... But although the choosing of flat is only floor 7 and below. Now we are choosing see where we should they.. so confused! left only few flat but still need to choose those block that not to near to the noise and must have some wind, if not the house will be super hot.