Sheridan -
I would definitely recommend trying the smaller Latouria types - I have a couple. I got them last winter in bud/bloom, and both are now spiking/budding. No rest, not tricky to grow at all.
Den. atroviolaceum v pygmy (still blooming in July in that pic, after I got it in bloom/bud in early March)
Den Aussie Chip (aberrans x atroviolaceum) (it too bloomed for a few months)
I also have a Den Mini Zengyo which is a rather small Phal type. This one also seems not difficult. Bloomed in fall on one cane and has another spike now on another.