I agree with Adam-011. A single JD and 2 convicts would be a nice combination. As far as plecos go, Gold Nugget Plecos are my fav. I'm planning on adding one to my 80g pretty soon.
I would deffinetly advise against a GT in a 55 gallon tank. They get to large to be housed in there permanently IMHO.
I would deffinetly advise against a GT in a 55 gallon tank. They get to large to be housed in there permanently IMHO.