email me I might have a few things for you .

Sorry, have no idea about growing under lights because my collection of orchids is "outside" all year....in glasshouses, or a shade-house or a few at various places as Garden plants. The problem i have is not heating enclosures to that mythical temp of about 55F (12C) minimum at night during winter. There are some "Vandas" that do not need all that much warmth and that might be better for your culture. Look for hybrids that have Vanda coerulea influence (many are blue) Or Rhynchostylis coelestis such as Rhynchocentrum Lilac Blossom where the flowers are coloured as per name and are not blue. Avoid the types with terete leaves as they are high light orchids. Hopefully, some of the under lights growers will add to this and recommend some good orchid nurseries in the USA. The thing about the red cats is that yes, some of the hybrids with a strong Sophronitis influence do like it a little bit cooler but there should be some over there that will grow well in general Cattleya conditions.

The three Cattleya Chocolate plants that i raised to flowering, bloomed three different shades of red. The famous, widely grown one, Cattleya Chocolate Drop 'Kodama' is darker. But that particular clone was produced from the original plant by the mericlone process. Because you did not include another name in quotes i assume that you have purchased a seedling (raised from seed) so do not assume that it will look like the clone Kodama. Just measured the pseudobulbs on one of my mature plants and they are 15 inches high. Some orchids are pretty tough and i see no reason why you cannot use the same organic treatments that you use on your garden plants. Wouldn't worry about the ratty looking root, probably caused by handling at the show. As spring comes on a new growth should grow from the base of the youngest pseudobulb and at some stage in the annual growth cycle the plant will grow some new roots. Wouldn't be in a hurry to repot, just observe what happens for a while.....

We will need a better description of your plant before we can help you. For instance, does it have very wide and long leaves that grow from the center of the pot? Is the "main stem with three stems branching off of it" the bloom spike? Then it could be a phalaenopsis. If it has leaves that come from several bulbs, then it's a different kind of orchid and will need different care.