I’ll just add a quick note without mentioning any type of equipment... purchase your gear with the end in mind. If your eventual goal is to dive deeper and go the technical route, buy equipment that will support this early on. Plus don’t try to purchse everything at onceI’d start off with a quality reg setup and build off that. As for a computerI’d go with a wrist mounted NITROX computer that can be switched into guage mode (for later applications). As for a BCI’d stay away from one of the intergrated ’do everything’ one and get a backplate (BP)/wing combo. The BP/wing setup is versitile, comfortable and will grow with you as you progress into more advanced diving.