well at least you got some flowers, nice!
i would say its ready to repot after flowering, for i can see a new growth already and in no time it grows over the pot. it would still do best mounted on a tree in full sun, but i dont think its an option for you.
almost no medium needed, i put em in a coconut husk, roots grow tru and over it, needs Vanda light and more. i never water em outside, so go easy on it, at best heavy watering every 1-2 weeks.
an old growers trick to flower em, 6 weeks no water at all, then 2 weeks heavy watering.
that is all for species, but i think it goes for hybrids as well.