Those interested in aquaculture, I highly recommend venturing into brackishwater aquaculture. Start with either cage or pond.

Aquaponics is not recommended for those who're starting. It can get finicky and expensive. Build a successful aquaculture or hydroponics first and later just integrate both.
first, need to determine if the site is suitable. especially on water source. both quantity and quality

Is there any concern about the location of your farm, like disease or minimum water availability? RAS do work, though not very cost effective.