Dan Air's first 5 727's in 1973 and 1974 were re-fitted with around 154 seats with the 2 extra rear doors - Memory has this figure in mind - it may have been give or a take a handful.
The Galley was midships on the starboard side (as shown) with a service door.
I flew on a 154 seat DA 727 soon after their introduction in May 1973 from LGW to Palma and the seat pitch was atrocious.
I do recall the seating was reduced to 146.
The seat plan above is a DA -100 series, but without the extra doors at the back, and these seated normally 131-134 pax.
There were 3 of these, and they were often located at Berlin, but both 'types' were based there.
Wardair's 727 had 119 seats.
Rows 1-22 with 34'' pitch.