This arrangement can seat about 150-165 people. There is room for another 100+ standing around the perimeter. Seating is slightly tiered so the entire audience (including any standing) has a good view. Suggested capacity for a comfortable audience with this arrangement is 275 people.
Stage size is W:4400 x D:2200 x H:300 (mm) it can easily be made larger by sacrificing some seats.
Photo by beermike (SuperDeluxe)