You mentioned keeping the car streetable. A high stall converter will help you get off the line quicker, but from my experience, it will also kill any fuel economy you had. So, that's one trade off you need to consider.
I dont really care about fuel economy right now. Car wont see a lot of street time this yr due to the exhaust and such mostly just to and from drag strip. Its just seems to be way to slow off the line and its doing well on the other end at almost 80mph with a slow 1.98 to 1.97 60 ft