I don't think dynamat would make much difference on the front door as it's already coated in black goop and then covered with a layer of foam (on my car anyway).
I'm not sure how much of a difference the foam baffles make in the sound quality, I didn't do a comparison, I did the baffles and new speakers at the same time. It just seems like they would give you a little tighter bass and in the front door especially it seems like they would be good protection from moisture.
15.07 @ 93.49
Team Duratec #149