Nice bike! I'd stick to the mouse and ditch the mug warmer myself, but I'd be careful with your hand gestures anywhere near the mouse – an unintentional swipe will alter the desktop view. The trackpads are used like swiping smartphone screens. Nice iMac btw! The screens are beautiful and the inbuilt sound is pretty good too. Have fun!
Not seen Infinity before but just had a look at the website and for around £40 it looks impressive. I've tried other apps and free ones like Gimp which is clunky to use. I use full Adobe Photoshop and CS everything at work but can't afford it myself for home. Infinity seems well worth a punt at that price and it looks like it compares favourably with high-end Photoshop.