Tropicman, Im fairly new to marine tanks. I started my tank in the beginning of november and still have only one fish and one coral. From everything i hear, slower is better. The bacteria need time to multiply and become powerful enough to overcome the load put on them by living things. Its possible your tank could handle a couple more fish but its a risk. The biological filtration, if not plentiful enough, will fail then you have a problem. Like I said, i am DEFINATELY no expert and may be totally wrong with all this info haha. But as far as i can tell its true and personally, id rather be safe than sorry with my livestock. Good luck!
Tim