Looks good to me. I don't see a good reason to worry about extra silicone at the bottom, it will never be seen. The side seams look very good, and it is the silicone between the mating glass surfaces that provides all of the strength, so if there are no serious flaws there you should have a tank good for a lifetime.
Thanks for the encouragement Hoppy. So far so good since I filled the tank, but it is only 1/2 a day now