Problem is... I am making the same style of map:
http://www.minecraftsurvivalgames.com/threads/forever-frozen-survival-games.67563/
(This is not advertisement btw)
Your has just started and I started mine a couple of months ago. I do not want to start a fight, but I personnaly think it isn't fair.
I think you should change some stuff and make it without snow. Make something more original. Surf through the maps and find an idea that isn't tooken. I'll be ok. I am not realy happy that someone ''takes'' my idea. And plus, it will be harder to get the map on the servers if their is two maps that look similar like.
Thanks, hope you read this and probably make changes.
MattHey