I take photos and videos as a sideline- not my main activity. But I am unaware of any particular BCD or computer designed for videographers. I would suggest that the best equipment is that which you are comfortable wearing, which does not interfere with the video gear you are using, and which gives you peak performance buoyancy control and body position control. I do a lot of inverted hovering to get videos and photos, As was mentioned by others, peak performance buoyancy and body control are skills necessary for any level photographer or videographer. And those in the know are almost universally in agreement that task loading with photo and video equipment should follow achieving a level of competence as a scuba diver. I wish you well as you move forward with your plans.
DivemasterDennis
DivemasterDennis