You want a comfortable, narrow bike that doesn't cost a lot to run. It needn't look fast or nick-able. Something that might also be fun at weekends(ie. most bikes) would make sense. See what it available. Heated grips are excellent. A tail-pack or top-box is useful. Panniers are too wide.
Get a helmet that fits well and has a good visor seal(-check it)
Try a few ear plugs and buy a big box of the most effective.
-I use Howard Leight laser (I think). I find that foam ones need to be rolled very small at the point for them to work at their best. Don't just plonk them half-heartedly into your ear.