They need intensity and duration, if you get full spectrum bulbs you won't have to worry about anything other than enough, watts per gallon is USUALLY a reasonable measure, and how long. Tropical plants need about 10 hours, plants from more temperate climes need up to 14. We usually go with the 10 to 12 hours range to cover most of the plant we mix in our tanks.
Aquascape? I'm a crypt farmer.
It's a fine line between fishing and standing on the shore looking like an idiot.
That IS an aquascape, it's titled "The Vacant Lot".