Certainly looks interesting Mick.
I have Cubase Elements 7, which is like LE but with VST instruments and a few other bells and whistles, including the VST guitar amp rack which is rather good. I am struggling with it because of the way it handles, or rather doesn't handle, ASIO in/outs in combination with the PC sound card. Apparently this is not a uniquely Steinberg problem as I have a friend who has the mega bucks version of Ableton and he can't get that to work properly (ie how he wants it to) either. Obviously this isn't a problem with the THR running as the in/out for the software, but you may find it tricky to edit projects without the THR plugged in.
I had Sequel LE supplied with the Zoom G3X and that worked perfectly OK when the only ASIO driver available was the Zoom one. Now that I have a USB mixer with its own ASIO driver all hell has broken loose. Suffice it to say that for all intents and purposes the Zoom ASIO can no longer be used. This is a complete pain because the digital out from the Zoom was astoundingly good. I do use MIDI keyboards as well which doesn't help with this.
The other thing you need to bear in mind about Cubase LE is that like Elements it does not have the beat designer. This was a big surprise to me in Elements because Sequel does have this feature and it is a lower specified product in every way, except for that. To get beat designer in Cubase you have to move up the product range to the â‚¬200 plus version.
The Yamaha is an amazing bit of (expensive) kit, but I'm afraid it is the headphones for me - even low volumes in the house would raise issues with SWMBO.