I think people confuse the old days when you put a fish through a high Ammonia spike and then a high Nitrite spike over the course of a month or more to complete a cycle. When you are using bacteria now a days, the process is extremely quick and the directions even tell you to put a fish in from day one and I have done this several times with no ill affects and absolutely no signs of stress from the fish. With bacteria, you should not even notice an Ammonia spike, (usually within a day or two) and the Nitrite spike is not harmful, (usually happens by day two or three) and the whole process only lasts five to eight days. The fish does not go through hell and you don't have to watch an empty tank.
That being said, I have never used the bacteria you are using, but there are several out there that have been used successfully and the two I have used are Bio Spira and Fritz Turbo Start 900. Whatever you decide though, good luck.