Welcome to Mint 61811
Yes just download - burn - install
No simple method to import, but both Evolution and Thunderbird use the mbox format and can read each others files directly. A little more to do than just importing but simple enough http://www.linux.com/articles/113798
There's no way of telling you beforehand if suspend/hibernate is going to work. The wast majority have no problems but there is a number of users that experience problems.