My recommendation is to buy equipment from you LDS. If it is a good outfit they will guide you correctly. At our shop we have students purchase their mask, fins, snorkle and boots. I do recommend exposure protection. We supply wetsuits for open water training but if your like me, I prefer to wear my own stuff. In addition to the above, when my son, wife and I did the open water class, we decided to train in what we planned to dive so I purchased BC and Regulators. We are a little technical here and dive Halycion BC. As for regulators, you can't go wrong with Aqua Lung.
Diving has change our life. We dive as a family and enjoy things we never thought we would do. Good luck and dive as often as you can.