The bath tub looks uncomfortable! One would need to be short in stature to have a relaxing soak in a tub shaped like that. Looks nice, but looks don't do it for me. Pity...the bathroom ambience is spectacular! Don't think the designers of these half- egg-shaped tubs and others like them gave much thought to practicality. I'm always glad of my big old plunge tub from years ago, looks lovely newly resurfaced....plenty of room to stretch out, nice wide edges to sit on if needs be, 1/2inch thick enamelled cast iron that keeps the water warm, wide ledge at the rear for easy-to-reach pamper products.... Think I'd rather have a larger version of the lovely vanity basin you've had installed as a bathtub rather than your half egg shaped one. Nevertheless, hope your new bathroom with a view brings you many relaxing hours.

last resort, check with local powder coating companies to see if they can paint some standard silver trim to suit

Thanks for the measurements, there were a few missing that would have made it easier to be more precise, But I'am making suggestions on what I think might fit within the existing floor plan which you are trying to do. the only small extension is to fit the laundry into a shared family bathroom. As there is already a shower and toilet in the current laundry I think it would be wrong to move them as they are close to your new alfresco area for the family to have easy access when you have your get togethers. To try and keep the girls bedrooms a good size and together with the other two bedrooms I suggest working with the fireplace and making the current Bathroom and ensuite but with the ability to share the toilet with the girls during the night. I have added my beloved barn doors to close off the kitchen from the bedrooms and also to be able to leave open during the day for extra light., the planned deck with roof over will make the dining/study/kitchen darker so you might need to consider a sky light. Anyway just a few different ideas trying to work with and around special features cheers

Timeless look! love the herringbone floor. Amazing transformation, from what looked like Dracula's bathroom in Hotel Transylvania to an amazing, light filled, airy and fun bathroom!