Unfortunately, you won't get any exact specifications like you are looking for. I hesitate to even say how many fish I would think would go in there. You will be better served to look at the fish available, make educated decisions about them, and look at the number of fish many people have in similar sized tanks with similar filtration setups, etc. I'm not being stingy, but rather I don't want to point you into the wrong mindset immediately out of the proverbial door. Also look carefully at the fish you are wanting and not only their compatibilities with each other, but with potential invertebrates you will almost inevitably want in the future.
Edit: To clarify, you will find specifications, but I don't consider them to be well-advised. Custom tailor your fish population to your tank, its capabilities, and your tastes.