If you are talking about fermented treasures pre activated starters, beware. I had a horrible experience with that company, maybe the worst customer service ever! In the end my culture showed up old and unusable, and they would not send another or refund my money.
Pizza not war, what happened when you had trouble with a 4 hour crust and a starter. I have done this a number of times and it is always superior to a 4 hour commercial yeasted rise. I have always used enough starter to make sure the dough doubles within the 4 hour time frame, so I am wondering if you didn't use enough starter, or if maybe your starter was not activated properly.