Plots and Room sizes for biggest, most open floor plan?

[Garble]

I noticed that if you keep the starting plot size (8x8), add a rotated Large 5x8 room and a Medium 2x5 room, you can open up most* of the remaining squares by adding 6 doorways. (*I haven't found anyway to open the square just diagonal to the initial entrance room.)

 

But if I want a bigger base with as open a floor plan as possible, what's the best strategy for this?

 

Edit: Okay, it looks like the question was already answered here:

 

The largest plot available is 24x28. The largest room available is 24x24. So... other than a four space strip along one side, you can have your entire base be a single giant room. That strip along the side can be occupied by 3-space-wide rooms and the spaces between opened up with Doorways.

 

 

[Garble]

Update.

 

As sykoholic001 said, the largest plot is 24x28 and the largest room is 24x24.

 

However, there is also a "Huge 2x21" room you can add (may need to rotate) and then use doorways to fill in the rest. This still leaves an unopened square diagonal from the starting corner.