get friendly with the buidling janitors or maintenance men. There are usually areas in the building for storage. (I'm lucky in that I get to use a garage).
Re pforbes 13 mile commute, that's the same length as mine, and i sometimes have 5 mins betwen eating and riding so my breakfast tends to consist of energy bars and coffee
It might be an idea for the first few weeks to commute one way by bike only, or have alternate days awayfrom riding.
if you start to feel tired and lethargic, it will put you off riding.
I try to ride 5 days per week, but don't get worked up if I only manage 4.
As a vegetarian, I also take a multivitamin/mineral complex which I think ensures I'm not sweating away vital minerals.
You will enjoy your commute, even when the weather is bad. And days like I had this morning, no wind, t shirt warm and watching a cruise ship going under the bridge as I crossed make it all worthwhile.