How much fish is too much?

[fishoholic]

I know the general rule is 1 inch fish per 10g. However it seems that most people do not follow this "rule" too closely. I've read posts and I've seen set ups of (for example) 55g tanks with 5 large fish 2 med. fish & 5 small fish, also there was a 72g with 17/18 fish in it. I personally think that is way too many fish for the size of tank. I do not want to offend anyone and I myself know how easy it can be to add one more fish. My concern is my own tank we have a 120g with a 30g sump. Our fish include one 2" lavender tang, one 3" yellow tang, one 5" regal tang, one 7-8" salfin tang, one 5" foxface, one 2" cinnamon clown fish who hosts a semi-large GBTA, one 3" zebra goby, one 3" yellow head sleeper goby, one 2" scooter blenny, and 5 small chromis. Which is 14 fish in total. We do have a good skimmer running on the tank which helps, but I was wondering what people thought about how many fish we have, is this too much for our 120g? All our fish seem to get along (for the most part) but I'm worried that our salfin tang is almost too big for our tank What are your thoughts? Please let me know- Thanks