In my opinion, for what it's worth, lots of plants and objects mean lots of hiding places for the fish...Nice tank, although I'm not a great fan of coloured gravel!!
Looking good, don't worry about looking cramped, mines even worse, the plants are growing like triffids and it looks like a jungle - but the fish seem to enjoy it.
It looks like a mighty excellent tank! Are you using a regualr incandecent light bulb or flourecent? Just wondering pro's and cons...perhoas i should post that as a new topic...yes I think i will go do that...Great Work!