Base on your location and the type of weather that you got, best bet is go with Vanda and Ascocenda that have heavy V.coerulea blood in it. The more the merrier as V. coerulea is the easiest Vanda to grow in temperate region and inside the house/under light. Bear in mind even by small in Vanda standard is usually around 12".
To grow, simply put the plant in wood basket or the plastic basket into clay pot with side holes and put them on top of gravel tray fill with water. Depending on the amount of light you give them (ex. T8 or high pressure sodium light) and the heat the light bulbs generate, you may have to water once or twice a week during winter and everyday to every 2nd day in rest of the year. Feeding is 1/2 of what u feed in summer for winter. Normally i just watch the roots. If the roots are active and growing, i feed them more. If they stop growing and in resting mode, no feeding require.
Other Vandaceae plants that do well underlight are: All Ascocentrum species , all Rhyncostylis, smaller growing Aerides like multiflora, rosea, krabiensis, crassifolia; Renanthera monachica, citrina, bella and mututina. Size range from 4 -12". Neofinitia hybrids are around that size too and will go big over time. But all are still managable.