Would recommend the TC Superlight 8 as it comes stock w/a dynamo hub and lights fore and aft which you wil need to add anyway for safe cycle-commuting. The weight of the bike for commuting doesn't scare me much. The gearing in the pic appears to be suitable for moderate terrain. Go on http://www.mapmyride.com and map out your commuting route and you can be informed of the elevation changes. There's an app specifically for that on the website.

Also, add a Mr. Tuffy tire liner to your rear tire at least. Learn how to change a tube and put your gears back into proper adjustment for your bike. At some point you will flat and the more you know the better equipped to handle emergencies you will be. In addtion to the stock lights I would invest in a couple of rear blinkies and a front HL that blinks as well. http://www.pricepoint.com has some very nice Sette lights for 9.00 that are the equal of lights costing 3x as much.

For a framepump I'd recommend a Topeak Road Morph w/Gauge from http://www.bikeisland.com 35.00 w/no shipping. It's the most effective and user friendly framepump on the market. Also, get a floor pump w/a gauge as well...Topeak Joe Blow is the one I have. Very good for not alot of money...again bikeisland.com. Trunkbag, tire levers, multi-tool(Park MTB-3 is 20.00 and includes a chaintool @ bikeisland), tube(s), patch-kit and extra chain links. Add a wb cage, wb and you're good to go.

The reason I suggested including all the emergency accessories is that even if you're not capable of doing roadside repairs straight away yourself whoever stops to help you will greatly appreciate the tools and forethought. My wife will attest to this. She thought I was going overboard until someone stopped to help her and commented that her 'emergency rig' was well thought out.

Very nice bike, btw.