Up for this very, very old thread but I saw the Octet with much of this lineup in London in 1980 I think - certainly Strozier and Idris Muhammad were present, also Mario Rivera on baritone and Sal Nistico I think on tenor, Danny Moore on flugel.
Just been watching a UK Channel 4 TV broadcast recording from 1983, with the group recorded either 1981 or 1982 at The Roundhouse as part of the Camden Jazz Festival (those were the days). By then the alto chair had been taken by a young Bobby Watson. It's a nice broadcast, culminating with Coleman's tune 'Simone', also featured on Elvin Jones 'Coalition' album.
George mentions in the broadcast the difficulty of finding time for rehearsals of the Octet in NYC with this busy group of musicians.