Synthfreak is right - by all means invest in a back-up hard drive. (firewire). I use the Cavalry 2 TB with firewire - very fast indeed! Also, I use the wireless keyboard and mouse from Mac (iMac). Since my screen is only 20" I have to sit pretty close to the screen in order to see what I am doing but if you use the widescreen as suggested you could probably operate from clear across the room - OR you could invest in a cheap pair of binoculars!!
Your Mini Mac should serve you well.
Your Mini Mac should serve you well.