jeeeeeeeeeeeeez, that map is massive!
Even if we just had the right-most part, and ignored the entire 'tail', it would take us ages to fill it. How big is it?
I can't get on the server, but the islands at the 'head' of the map look like good candidates for a spawn. The sand and water could be developed into harbours, underwater homes, lighthouses, boats, etc, and there could be a diverse travel network in each direction.
There's also a bit in the top-left that merges with sand and forest that is quite flat and could also be developed into spawn.
If you follow the map down, past the snowy bit, there is another stretch of grass that is also a potential candidate. I quite like the mountain after it that has a waterfall, looks like a nice area.
My only concern here is the size, I think it is unnecessarily big. I think it will be a long time before resources become scarce and I'd personally rather develop and build up an area less than 3000 x 3000 than have stuff scattered all over the place - I have a feeling that all the unused land causes nasty lag and unnecessary server load too.
There's a really nice example of a server who did an awful lot in a small space and it looked fantastic, I'll try and find a picture.
Edit: Looks good vince, I'll be there to help laying the foundation as well
Edit2: Here's the picture - this is from the Penny Arcade server and I think it's fantastic
http://www.fusedcreations.com/adam/colrap_render_013.jpg