Okay thanks alot Azelor!

1: I will have a bigger planet if I can find a way to lower the gravity so its still on the same level as on Earth. For that, I will need someone's insight. Or I could be lazy and... MAGIC! But ain't fun...
2: I prefer having the ice in order to keep a certain balance in the temperature of the sea. Water currents will be important in my world.

Mmmm... Now rotation wise and all, I will need to be careful. If bigger, then the rotation cycle and the seasons will be longer, unless the speed makes up for it but then it will cause more gravity and not just that... Think about those studying the sky when sailing across the ocean... If it moves faster... Mmmm....