Congrats Charles. Good choice. Mark from AP is very responsive and great to work with. Like I mentioned TKboots definitely - I would go with the 10, their sizes seem rather large. I'm actually a 10 and I went with their 9.
Blaster wise - yeah you don't have a choice really unless someone has a Doopys kit lying around. I sucked it up and got it shipped here. I picked up the Hasbro conversion kit and a DL44 for my sister as well.
Voice - I spent a lot of time researching this and I went with Aker+iComm combo, best value for money imho. It's in the ongoing sales forum.