great, another market gardener!
RIght now I don't think a lot of my tomatoes will be ready, some look fine. Some look really sick...Peppers look good though.
I use both perlite and vermiculite. Both have plusses and minuses. I just hate the way perlite "floats" to the top after watering, especially when you have planted seeds and tiny ones at that!
Good luck to you also! Post some pics (we are hobby marketers, not like the big farmers with truckloads of tomatoes) we usually just have a few boxes.