I would place the sofa facing the fireplace either with access to what's behind the draperies or not, and put the tv where the chair is--roughly. On the far end I'd arrange a small conversation/reading/activity area. IE:2 chairs, a table and a lamp or a small activity table with a hanging lamp. Of course, seeing the scale of your new furniture, once you receive it will help. I just hope you have selected comfortable furniture in a smaller scale than what you have.

We have been renovating an 80's home with a vaulted roof in the living/kitchen/dining area, something like your picture. We needed to make the space look bigger so we opted to hang our tv from the roof using an Adtec tv bracket in white, pretty nifty unit, all wiring, aerials etc go up the mounting pole and through the roof. The unit also swivels 360 degrees which is great for any view point in the room, including our outside area. We had a tv unit custom built by Jarramar Furniture which is like a rather large floating cupboard. The unit has 2 draws and one cupboard. All the cords etc come down the wall in the adjoining room behind the door, neatly packed into duct and back into the back of the floating cupboard. It's very neat and tidy, keeps everything off the ground and makes your space look bigger. Both Adtec and Jarramar have websites where you can check out their stuff. You just need to ensure your tv weights are ok for the Adtec unit your wish to purchase. Good luck with your design.

Not keen on tiles ... prefer a smooth surface with no grout lines to try and keep clean

I didn't see this either , and how long is a piece of string ? Wellington ( a bit like parts of Queenstown ) is known for steep slopes and high winds , so the actual design will affect things a lot -- my sister once 'conned' me into moving her to Wellington when she got a Government job . We loaded one of my small trucks and drove several hours , when we got to her new place on the side of Mt Victoria with lovely harbour views , it seems she had forgotten to mention that the new house was the one up there -- yes , a 1920's build 130 steps up from the street . Hard enough moving a glass fronted china cabinet and solid Kauri 1880s dining table -- imagine carting every bit of timber , tile , window , kitchen appliance up there !