Prime Epilogue

OK. Thanks I thought that would be about it, just didn't want to put all the work in only to find out it won't work. 

Thanks for all the help and tutorials. 

Hi. I'm looking to make a 8km x 8km map of my home farm area. 

It needs to be this big as some of the paddocks my grandfather owned were over 4kms from the main farm. 

What will I need to change in this tutorial to cover this area? 

And if I want to scale the real world 8x8km area to fit a 2x2 or 4x4 map for fs is there anything else I need to change? 

Thanks for your help. This is a great tutorial. :-)