Good morning Pizzaiolo7,
The base frame with the gussets is 36" square. Then on top of the frame you have the oven base which is as follow:
- 950 size it is 50" deep (+ 5" for the damper handle) by 55" wide.
- 800 size it is 45" deep (+ 5" for the damper handle) by 50" wide.
In ideal conditions ( space money, budget, ... ) a 950 is the way to go. However I have cooked for years in a 700 at home due to space / money restrictions and loved it.
I have also cooked commercially for 2 years in an 800 and was able to cook 2 pizza at a time with grate results.
I would certainly say that the heat is well balanced with the 800, the pizza would just be a little closer to the fire , 5", than with a 950.
There are some members on this forum with an 800 and I think they are very happy with it and cooked some nice pizza, even for beginners.
Also, it is a plus to put the oven under a covered area, but not a requirement as once finished, it is weather proof.
Let me know if you need anything else.