FYI here in the antipodes this is common practice (eg: Kingsmuir traffic G-xx downwind etc) and is now second nature.
It doesn't make the call much longer, but putting the area before the main information does tend to alert those in the vicinity much more than a 'bald' call would. It also gives a little time to key into the detail from the remainder of the transmission, perhaps assisting a little in comprehension.
I'm less certain about the value of 'tailing' however.
Otherwise a good move
FP.