Did you know that the Enlightened bits (arms, heads, weapons) fit perfectly on normal Tzaangor bodies?
I'm building my 6 discs as Skyfires, and bought an extra box of Tzaangors - using 6 to make Enlightened on foot, and the other four as backups for summoning with the shaman's spell.
The Tzaangor bodies are a tiny bit shorter, but not very noticeable - I've done my first three and just stood them on low rocks, so they stand a little higher than the other infantry. Works a treat.
Excuse the poor photo, but hopefully it gives an idea of the comparison to a normal Tzaangor.