I'm so sorry for the loss of what you had and loved and worked so hard to get almost to your liking. I agree--step away from Pinterest.
I felt overwhelmed planning a new kitchen a few months ago and was finding NOTHING on Pinterest for a space I liked that roughly matched what I was looking for.
So I made a list of everything I hated in one column, and what changes to each one in the other.
I would recommend you do that.
Start with color. Find a fabric in a color you love and could be surrounded with all year long. I chose pale yellow. Keep that fabric in a special place so you'll have it to color-match paint when the time comes.
Make sure you like your view. That's huge.
You've done this before so you know what kind of space you need to move around it--and it sounds like you'll have NO problem having enough space!
Plenty of electrical outlets.
A place for handwork.
Design wall not near sunlight unless you can draw a shade to protect the fabric.
Acoustics. Is the basement echo-ey?
Have a bathroom down there? Sink? Coffee maker? Chocolate cupboard? haha