Type: Posts; User: drcollie
There is not a guideline per se, however I like to see about 4' from one arm to another.
Sectionals don't work split apart, the inside joinery area is not finished enough to be exposed.
I would personally keep the two sofas the same and make them matching. The trick when doing an "L" shape lay out is to have enough space to put some gap between them. If they are too jammed...