i understand what everyone is saying but i think the tank you have now is brilliant. its simple and you're gonna be able to enjoy all your fish without straining your eyes for ages amongst the plants and stuff. why not get one or two amazon swords and keep the plants you have.
tanks that are full of plants need LOTS of maintainance and alot of patience. and the whole "oh you need CO2 to make this happen" and stuff isn't true. ive grown plants perfectly with water and lights.
another word of advice. big fish (such as plecostomus) dont really work. they're really messy and unless you have a filter that will blow the plants clean, the mess they create is often too heavy for the filter to shift and their messy stuff usually sinks to the bottom and doesn't make your tank as beautiful as you imagined.
if i were you, i'd stick to the layout you have now because it doesn't look crap in the slightest. ive had my tank for over 2 years now and i think it looks crap. especially since i got my pleco and its leaves its wrong stuff all over the leaves. not a nice view lol there's a reason why alot of the HEAVILY planted tanks only have like one shoal of neons or a shoal of cardinals. they don't leave much mess. just something to think about before you tear your beautiful looking tanks to peices.
how big are your clown loaches now? people say they can get to like 12" but thats not for years! like at least 6 years or something and the bigger they are, the more you can sell them for
the golden panchax are beautiful but can eat small fish like neons and stuff. but then again alot of fish can. i see you dont like boring, simple fish (like guppies dare i say it lol) that everyone has and recommends. ill have a look and try help you out abit if you want? because i think you have the same taste in fish that i do
sorry for the full essay