squeakerd - it is really hard to get a perspective on the whole area but if this is part of a much larger area then I feel you need to first decide just what you want as the end result. Do you just want your entire area to be one open plan or do you want to break it down into visually defined areas within the open plan. As you have the area now, I don't feel any cohesiveness between your table and the sideboard, I think I would move the sideboard to the end wall, it looks more like it would belong there, even just by the shape of the room. Definitely a larger rug will define the space better - just be careful of any trip hazard with the door nearby - but before you decide on the rug, consider window dressings and whether you want things plain or introduce some bold patterns and what colours look best in the area. Artwork can go where your sideboard is now, but again think colours and impact of design on the whole area. It is all very well to build a room around one piece, but you need to look at the impact that piece will have on other items and what limitations it could cause. I would suggest you set aside some serious time to look through photos on Houzz, especially if you can find areas similar to yours, till you find what appeals to you, put the photos into your ideas book and use that to build your room. I have found this invaluable in the past and it has saved me many an expensive mistake.

I understand wanting to keep the views from as many rooms as possible. However, how much time is spent in the bedrooms? And is the view visible the majority of time one spends in the bedroom? Consider that the most restful, secure sleep is obtained when the bed is placed opposite the entry door. That is not possible in any of your current bedroom layouts. Perhaps you should consider single solid glass French doors or windows flanking the beds opposite the doors rather than the large windows you show on the plan. Choice of doors or windows would be based on accessibility to a deck. I assume bedroom 1 and the office/bedroom have built-in bunk beds. I think the deck between the family and bedroom 3 seems inaccessible and a bit of a waste, and I wonder how one gets outside from the kitchen with the trash, etc. Do you have no plans to garage the vehicles?

Your lounge looks like it receives a lot of sun so you might like navy, turquoise, or emerald green for the room. Whatever color you pick, leave the valances (?) above the windows close to the color of your air conditioner, so it won't be too obvious. Use lamps and update the ceiling fixtures. Bamboo blinds might look fun on the windows. Look to the kitchen floor for paint colors in there. It appears the range hood is way too high to be effective. Is that just the perspective?

My vote is for the wash but not in bright white and after some selective knot primer in the same tone. You are going to want to selectively primer down about 2/3 of the knots (use a dark white tinted primer), and use a dark white / brown toned off white instead of bright white so the beams still give you dark white on bright - that would be my vote. Consider something like bm stingray tinted primer and wash on the beams. You can add glaze for more working time or put down dropcloths and use water to cut it into a wash. Test it on some other raw wood that has had tannins develop for a few years. Then put it against your white wall - your husband will get the contrast and wood grain but you'll get the quiet palette you were hoping for. They both will have architectural depth and interest.