the only problem i could see is, depending on your tank dimensions, is that your large pleco will be cramped.
Other than that, i think you have room too add in 9x Cardinal neons and 9x glow lights. Take the pleco out (depending on dimensions) and you might be able to do a little more o_-! it IS 55 gallon, and all those fish you listed are realitivly 1-2 inch small fish. so you can afford more stocking...
or instead of the above listed i mentioned.... get 5x roseline sharks!

Peaceful, don't disturb tetra, probably work in your 55. Especially -1x large pleco.
yeah. I can see him out growing that. I hear too often. My plan for plecos are to let them get just the right size where they almost outgrow the tank, then trade in, get a new 2" pleco, so i profited $25, and get some other stuff with the money. Therefore, i get a pleco, and i get money

. I heart my LFS.