Don't be afraid of conconut husk fiber. No need to rush to do repotting right now coz your new plants in spike may get shock & set back for a while. Just let them bloom first. Meanwhile, you can control watering if media is retaining too much water & protect from rain.
You can safely repot once blooming finished. And keep them in bright shade & sparingly water it. I don't know what your orchids are, some prefer to dry out faster while some need to keep moist. Depends on your orchids genre you can choose suitable media for each of them.
Btw, what orchid are they? Some orchids