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Both the pleco and the blue gourami that you have with get FAR too big for a 10 gallon tank. You should either take them back to the store you got them at, or give them to a friend... You could keep the tiger barbs and honey gourami though... just so you know, for a tank that small, you don't need an 'algae controlling fish'. Doing 25% or more water changes with the gravel vac (siphon) once a week should be fine.
I'd have to disagree with the tiger barbs. They are also to small for that tank, since they are so active, aggressive, and nippy. They also can grow up to 3 inches a piece. They will harass each other to death in such a small tank. http://www.aquahobby.com/gallery/e_tiger.php