Awesome collection! And regarding grow lights, you don't need to buy any fancy "grow lights" (I mean that blueish-pink that most people use to grow their weed xD). Regular bulbs (LED) will be enough and much better than nothing - just keep it close. Plants need energy to grow, and they get it from the sun, simple as that. It's especially important for variegated species because those variegations usually do not photosynthesize. I'm unsure about Alocasia, but other plants often discard those parts in low-light conditions.