Since Schoms grow naturally here and my father has grown them for a long time i think what I will say can help you a lot.
Schoms. grow in the branches of high trees and at exposed places, they grow better when they get full sun. They also like hot weather as they come from the lowlands.
If you can give it some humidity, good amounts of light, a coarse and well drained medium, warm to hot weather and lots of space it will grow well for you without difficulty.
add a lil humidity in a greenhouse and they will absolutly love our summers. thanks for the info!