OP:
I took the liberty of looking at a bunch of your posts. It's pretty clear that you have developed a real passion for the hobby and care about your tank. That said, I don't think you really hearing the advice you have received. As almost everyone has noted, your bioload is very likely too high for the tank. While someone will almost certainly tell you that they have kept a foxface in a small tank, the odds are very heavily weighted against you.
With regard to the cannister filter, again, there are those that use them successfully on a reef tank but the large majority of successful reef keepers avoid them for a variety of reasons including maintenance and the risk of them becoming a nitrate factory. Note that they can be useful for occasional water polishing and perhaps as a substitute for a media reactor.
The single greatest tool in the reef keepers shed is patience. The second most important tool is critical research. This means read ALL of the stickies, listen to the advice of others (even if it's not what you want to hear), read books, etc.
I think you're going to be a great reef keeper. Just need to get you thinking like one.
