No I don't have Skype and sorry I will never use it for a personal reason.
Feel free to PM to me here or, if you like, we can meet together on Facebook.
But I'll give you FB infos only through PMs obviously.
Well, concerning the graphics... that's a good idea to wait all maps first.
AFAIK, I can also optimize sounds turning them into .ogg files (not flac unfortunately) and so on, too.
Keep in mind that it's 3am where I live, so maybe you'll need to wait some hours for a response (which will be surely good
).