Usually Cyp is really busy helping out the servers, I'm not quite sure if he'll do it for you, Might want to put your Island coords in hidden content Just incase ^-^
I have only known a couple of people who got their biomes changed and they were 400 donors. Basically the principle is if cyp does it for one person, everyone else will want it. So he needs to be fair. Therefore biome changes are most likely not going to happen