iris should work on all shards, some might not allow third party programs though.
to get rid of the bar : try adding
gHideMemoryUsage = true
to config/config.lua
if you like the old original preaos gameplay and don't mind a lot of pks and pvp happening,
try
http://www.uogamers.com/ (hybrid)
if you're more the peaceful crafter/pvm type, and don't mind a bunch of extensions of the original crafting system, equip and pets, try
http://www.vetus-mundus.de/
this one also officially supports iris, and has a dedicated forum section for it.
many german players, but also a few english ones around.
more shards :
http://iris2.de/index.php/FreeShardLists