Missed this post at the time Stig, but echo the comment about this being a good call on your part. Deserted country lanes are one thing, but City streets quite another!
I may have mentioned this on here before, but I had over six months of motorcycle commuting 50+ miles East in the morning and West in the evening... No avoiding low sun for at least a big chunk of it and when the sun hits you square in the eyes, it takes all the fun out of riding for sure.