Mobility of the pit is a great advantage when entertaining.
I mean if you have a breeze in the wrong direction and the smoke is blowing to the area where the guests are, or one of those swirling types, your guests are smoked out.
I'd personally go with a non-permanent set up.
But if you're set on it being built in, make sure you consider your predominent wind direction in the setting of the pit.
just my .02 cents
Char-Broil offset, Lang 60 Deluxe and a 60gal compressor tank RF smoker in the works
Pign' Out BBQ competition team
I'm officially a ZERO
Hoping one day to become an official IMBAS Certified MOINK Baller