Why such big units of lesser daemons? The only issue I see is if Abbababbadon is in the LR you only have two icons. Then when your two LD units come in, you will have a sh**t load of models in just two places and no where else on the board.
In a multiple objective game, do you really want to rush forward with the PM unit and then have to send 10 daemons back to take a random objective when just 5 or 6 could do the same thing?