angle them about 6 inches in front of the opposite listeners face and about 2 inches down.
anywhere in that general area would be ideal.
so use some scrap wood\chopsticks\wood dowels and something like hot glue\ca glue\fast drying shit to mount them - make sure its super strong because when you stretch the last layer you dont want the cloth to sag and look like crap. and make sure the .5 inch lip (at least) is super strong too, because when you stretch it will flex away from the door panel, you do not want it to warp.
the right wood panel thing is to raise the right hand side up to get more airspace in the enclosure. its not a cut out. if you dont do that, then it will look silly (imo) and get really flat looking on the right half of the door. basically cut a piece of wood just past the size between the right speaker edge and just short of the lip you made, then mount that just like your baffle.
just make sure it does not bump into your seat when you close the door.