I will disagree with #6 Object, Column and Variable name should be in Title case.

You should code these as they are declared in the database.  If the column name is declare as 'object_id' then you should code it as 'object_id' (check the system tables).  My rule of thumb, code as if you are working in a database or instance where the collation is case sensitive, even if it isn't.  You never know when your code may get used in such an environment.  This is just a defense coding method I have chosen to use and it has saved my butt numerous times.