Hiya,
OK, that's the base as such
I would use AllDials one (enhanced sh5)

works like a charm
The other mods as you guess are optionals
Ohh the twisty thing, that's the wire some u-boats had around the top of the periscope/s to help disperse the wake (less noticable)
Will edit with a jsgme snapshot maybe show you what order etc, here it is ............. and a direct link
http://i159.photobucket.com/albums/t...e_co/jsgme.jpg
Ohh and rem, TDW updates regular so keep an eye on the thread