My tanks (10g) are both overstocked by typical standards, however the water is kept clean and all the fish have appropriate swimming room, what does it matter? I keep rosy reds to be eaten by my ACF, cheap source of food, and great when trying to power feed your animals. Whats so wrong with feeders?
Madcatter
The goldfish concern me, how big are they? They could poison your rosy reds pretty fast if you don't keep up water changes. I have no problem with your tank, as long as they are small, and you keep up water changes. I'd start looking for a perminent home for your goldies if you really want to keep them.