Bit worried about the lighting though. IME, a single standard aquarium lighting tube isn't enough for plants to do well, or even hang in there. Anubias might get by, but that's about it. The Vallisneria certainly won't. So I suspect you'll need to at least double the amount of light.
On the flip side, as soon as you get enough light for the Vallisneria to do well, the Anubias will get covered in algae. Anubias is adapted to shady environments, and almost always does best planted under something rather than in the open.
Wholesale Trops is one of my favourite stores in London. Always manage to find something nice. Do keep your eyes peels in the livebearers/killifish section. Any of the small but robust species would work well with Figure-8s and gobies. Xenotoca eiseni (too much a fin-nipper for the average tank) for example, or the Florida Flagfish (great algae eaters, by the way).