I didn't expect so many people respond to my question. Thank you all, folks! Your advice is based on your experience, real-life situations, so I should follow it very closely. You know what you're talking about.
I have an additional question.
One of my favorite sales guys from a local scuba store told me bp/w venue would cost me A LOT MORE than a "standard" BCD.
Can you confirm that statement of his? Reading this board, I was under impression it was possible to configure a decent bp/w rig for less than most BCD systems.
He insisted that a bp/w requires better quality regulators, octos, etc. I agree, if the bp/w is intended for technical, highly advanced diving, you should use high-end components. But for 'light' use?..