Wow, some really dedicated setup you got. I took time to read each of their manuals in my spare time this week. Yamaha samplers are really powerful for their functionality that they offer and I can imagine it will be awesome for ambient music type sounds as well. The Sony cassette deck is a really good investment that now I am also looking to get one. Your setup description also gives me a sense of how others are doing it and that is very informative. I had a burning question about where Renoise fits in with all this hardware that you have but it looks like you have it setup just right for you.
I am in Thailand right now for my first workaway experience:) Good luck on your move too!