Cyberman's right, Stockport to Marple around 5pm is dreadful. An early start is a good option, the earlier the better, and then an early finish at 4pm or a later finish after 6pm would be better options. When I was working we had an option for a 40 hour 4.5 day week or a 9 day fortnight, so we could start early and finish late 4 days a week and then finish at lunchtime on Friday. Others used to work a full day one Friday then have the second one off. Would your employer have any flexibility like this?