Hey FWIW I wouldn't do anything to that strain but minor training. It is a small/Medium plant with an Indica background. I had a Sour Bubble mom from BOG for about 15 years. It didn't like to be topped, trimmed, Defoliated, ect at ALL. It also didn't like to be root bound at all. It would slow the growth down or stunt the the plant badly.
Anyways, I am sure the plant will turn out nice. As a rule of thumb I don't do ANYTHING to my Autos but leaf tucking or minor training the first grow on each strain. I do this to see how it grows naturally. Obviously you can have some different phenos, but it will give you a baseline on size, yield, flower time, ect in your own environment. If you top an Auto, it most likely will add time to the overall growth and possibly reduce size of the plant. A high % Auto Indica is most likely going to finish fast, be very dense, and tend to be sensitive compared to larger sized plants. I have a couple 24 Carat plants that I transplanted later than usual, they will be a single Cola Bud. However when I transplant on time my 24 Carat plants grow much better. Minor rootbounding on an Indica has much more negative effects than most larger growing strains. I would not ask for a refund, I am sure it will be fire. But I would try another and not fimm or top.