if you're near Goose Green then you can walk to Peckham Rye station in 15mins, so you aren't hostage to ED station (phantom) service. PR station has Overground and links to Clapham, London bridge, Victoria, Luton/St. Albans. plus Peckham Rye street certainly ain't anything like HOP, so a bit more variety/option, when mixed with ED features.