Damian,
I don't know if I have any suggestions for you but I can tell you how it went for us. Last year was our first year out doing a local FM, it was 3hrs. 4-7pm, and it was the first year for this market. As for a kitchen rental, where I am, they go for about $25/hr.
So the first week not knowing how it would go we prepped I think around 100 balls, and carried toppings to do 6 different styles. I had a 10x10 tent which was a savior because of the afternoon sun/heat/rain, I carried 3 folding banquet tables 2-5', 1-6', a 48" pizza prep table, a 3+1 sink set up plus the outboard gear for it, an extra dough work table and some coolers for drinks, oh yeah, a generator too. And of course the oven, a trailer mounted 40" WFO. So for the market itself the first and last hours were busy but not crazy but the middle hour was total chaos, I had 5 workers including me because the last think I wanted was to fall behind the first time out, of course we fell behind. One thing that happened and there isn't really any way I have found to combat it is that doing personals one person might be in line but they order four pies. This happened several times and really jammed things up. Anyway, all in all it was very successful and greatly received. I could probably write a few pages describing the first few weeks and details and lessons so it would probably be better to PM me if you want to chat about it.
Good Luck
JG