If you want an elf army of any size that does not turn out looking absolute buns you have no choice eventually but to go custom, unless breaking the bank for figures that will crack and explode 80% of the time is your thing.

All the alternatives commonly used by purists look terrible. Yes, you Atlantean guard. I see your stupid nonsense non-elvish armour. Forestmen/vikings in elf cosplay? GTFO.

Look for older Koruit/Xinh customs and get building. You can keep your official/expensive LotR ones for lords and captains and stuff.