Hi Nelly,
your tank looks great, the gravel really brightens up the tank.
I would just like to comment on your stocking (why do I have to be the bad guy?
)
Instead of adding all those fish this weekend, I would suggest adding 1-3 fish every week or so. If you add all the fish at once you'll run into problems and will most likely loose a few fish. (which happens to everybody in the beginning).
What type of pleco were you planning on getting? The common pleco will grow a few feet long, so you'll defently want to avoid those!
But there are smaller plecos out there that would be suitable for your tank.
Also, I would only suggest keeping one large gourami in your tank, because adult males can be aggressive to each other. If you can get a pair (male and female) then that would be fine, but I can't tell you how to tell them apart as I have no clue!
Thats great that your adding more barbs, as they can be aggressive fish but when kept in large schools are a lot less aggressive.
How many gallons does your tank hold? It looks like a good size for somebody new to the hobby to start out with.