Well the first pizza was a bit of a disaster, the base didn't cook and I think the reasons were : I built the fire to the right only so to keep the floor as clean as possible so those base bricks never got that intense heat to begin with and secondly I didn't pre-heat the oven for long enough ( i don't have a temp gauge yet) so it took 20mins for that pizza to be eadible.
funnily about an hour later would have ben the time to cook the pizza.
live and learn, i'll do more experiments to get it right, thats half the fun!