Yeh, our mkt (summer hrs) begin April 6th so I'll be out there doing the same.
Personally, I think I like perlite better than vermiculite; maybe you can try some of each and see which you prefer. And for tomato plants and peppers I believe you should cut back a bit on the blood meal, too. I try not to feed tomatoes/peppers too much except for fish emulsion, just to keep them healthy but not growing too fast for their pots. Neither tomatoes or peppers will benefit from all the nitrogen in blood meal...save that for your herb plants, they'll love it!
Good luck with sales this year!
Shoe