Sounds like you are keeping it - good job
Looks great in that spot, and being in the kitchen it is the easiest place to maintain it. Plus you can "feed" your garden with the fish waste. I got a thin Hozelock hose with all the fittings and it winds up onto a small reel. For my large aquarium in the bedroom I just pump the water out of the bedroom window onto the front garden, then fill a beer bucket on a stool by the side of the aquarium with the same hose from a cold water tap. Then I add boiled water from pans and kettle to bring it up to temperature, mix in de-clorinator and use the pump to pump it all back in. Considering its size it is the easiest tank to maintain because it is all done electronically

Oh, and you can use this hose to transfer the water directly from your larger tank too!
The main thing in setting up a new tank is to use mature media in your filter and ensure it is fed, to speed up the cycling process. I have read about adding Ammonia into the new tank to feed the bacteria prior to adding any fish. There is a lot of info., out there - Google "fish-less cycling", there may also be something in the resource centre on this blog? You can put extra media into your existing filter and then take some of it out for the new filters, this will then have some of the good bacteria on it to kick start the process.
Yes the doors are upside down.
What you planning to put in it?
Your other tank looks great too.
Very exciting for you...more fish