A bit off topic, but I do have a massive High Elf Army and the only thing I would like to add to it would be some Drakon Riders.
I will make 50 mm by 150 mm bases for these and may mount some on rubble to make higher.
This is how I have solved the problem with as little expense as possible. I bought three Young Fire Dragons from Reaper and added some very old cheap second hand High Elf archers.
I can see myself making two hordes of these, as the dragons only cost £2.55 each and the Elves pence.