As an addendum, I'd propose you get the LARGEST iMac you can afford and / or fit on your desk and read comfortably. The resulting screen area is gorgeous.
I have seen problems (admittedly with MacBooks - the small plasticy white ones) with a specific model of Netgear wireless access point - the laptop crashes needing a reboot, but no problems on plenty of Macbook Pro living in the office. You shouldn't have problems but this was a bugger to track down.
Also, spend some money on, or reuse an existing, USB hard disk as the "Time Machine Backup" - automated easy to use backup and restore.