Hi Mar, is this as an add on room or a faux look? Here's a link to get the look
What do you want to do? I have that in my house.
This sounds like you need a local design professional.
A renovation that removes walls & ceiling framing is not a DIY project.
An addition that does these things is not a DIY project.
We’re talking about Structural changes in 3 ways: roof, walls & foundation.
That requires Building Permits, which require Construction Documents & Plans Check.
If you want to “faux” it, we’ll need pictures please.
I have open concept in my downstairs. I define areas using area rugs for seating and dining.