I would at least swap the dining area for the sitting area. Your new views to the garden will be appreciated more often than only at mealtimes. I agree with Kemi but keep the layout open ie don't have the back of your L sofa to the kitchen. You might also fit your woodburner in the wee corner next to the bi-fold doors. I don't know if you can open up the wall between the kitchen and (your planned) sitting room ( the wall adj the hall).

I'm hoping to start a new bedroom scheme soon upcycling some old pieces and your project is an inspiration.

Hi Kyle. Can you move the furniture you're selling into another room temporarily and try rearranging the furniture to see what space you're actually left with so you can measure it out properly? I might be wrong but it looks as if the only other place the sofa can go is in front of the sideboard, it looks by eye as if it would be too deep to go on the RHS of the fire? Has your partner actually found tables he likes?

I was once told that you shouldn’t have more than 2 types of wood in only one space. The floor looks lovely and I’d be tempted to paint all the wooden furniture so that they read as a matching set. Rather than make them a ‘feature’ with a bright coloured paint, I’d push them into the background using a white wooden stain or antique white cracked paint. Add a toughened glass top to help reflect daylight giving protecting to the paint. If budget allowed, I’d be tempted to invest in a neutral coloured rug bringing more daylight into the room. It could be look very sophisticated!