resizing output

Hi all

I will be handing off a series of AE project files, created at full HD--but a 720p version will be required for final output;

I am trying to decide if it is better to nest the final  into a 720 comp, or to leave it at full HD and make some sort of notation to resize in the output settings. The first method seems a bit more "idiot proof"--but the latter seems to have some quality advantages according to some Adobe documentation I have seen.

Any tips  appreciated.

ML