drapes wouldn't be bad on some of the windows. If you want this type of look

if you need to cut out light/glare or hear, look into solar shades. they've come a long way.

but for your space, I think the Silhouette (or Pirouette) type of blinds would look great.

roman blinds

Clean simple lines in your sectional and cute little bulbs - so I'm thinking sheers in modern look [no heavy with it either] -

Signature Double Wide White Sheer Curtain Single Panel, 100"x96" · More Info

https://www.houzz.com/products/signature-double-wide-white-sheer-curtain-single-panel-100x96-prvw-vr~84065605

what neutral, but here's a pic / their bronze rod could become more modern, chosen how you like.... if outdoors is open in a rustic sense, again that might help with the decor impression [away from a traditional look] --

Seamless 108" Wide, Two-Way Rod Pocket Panel uses a curtain rod up to 1.25 inches in diameter. Also has a standard 1.75 inch rod pocket sewn inside the larger pocket; the standard pocket will create a 1.5 inch ruffled header at the top of the panel.

Tergaline Double Wide Sheer Curtain Panel With Weighted Hem, Ivory, 108"x96" · More Info

Filters outside light and glare and provides privacy. Available in 54" W / both widths available in a grommet header. Weighted Corded Hem, Tailored 1" Side Hems, Machine Washable.

I read the professionals writing of 'how they stack' -- though heavier faux silk, maybe these if same color as wall paint, to blend in, and not make a strong statement.

Blackout Extra Wide Vintage Textured Faux Dupioni Curtain, Silver, 100"x96" · More Info

https://www.houzz.com/products/blackout-extra-wide-vintage-textured-fauxdupioni-curtain-silver-100x96-prvw-vr~102352830

ah... I remember my wintry houses ... cold through the windows - yours have that?

White curtains in LR. And in set back DR a different look to contrast with strong lines there, and add softness, pattern only at top.

Orange/grey pillow? whatever colors.....

Weeping Flower Room Darkening Window Panel Set, Turquoise, 95"x52" · More Info

Beautiful home! And those views look so peaceful. I would do inside mount woven shades with simple curtains. Something like thIs

.

The up and down shades?... sometimes you might want to cover window's lower, to cover people on the deck, or the deck itself.

Thanks for all of the thoughtful comments. Wintry cold is not an issue - just aesthetics and occasional shade on TV. It seems that there is no right answer but this gives me some good ideas.

First, I must say that you have a lovely home! Halcyon is currently having a sale and I believe we have the window treatment for you. I would love to talk to you more about what we offer at your earliest convenience and you can reach me at 636-352-7689. I believe we have something for you that is low profile to keep the place lite, and something to not take away from that amazing view while simultaneously cutting back on glare during the day (including multiple other great benefits I believe you would be interested in)! I look forward to hearing from you.

I will add some photos of what I ended up doing on my post,

This is what I ended up with , drapes facing back and blinds facing front of home, I was wondering where you had purchased your dining room light

That ended up looking great - thanks for sharing!