It is where the 'Shackleton' exhibition found a home, as you say, pretty ideal location. Terminus of many bus routes, lots of parking, 60 second stroll from the dart, etc.
Good point Dave - you can buy an upgraded 4A supply - http://www.hornby.com/digital-15v-4-amp-transformer.html - well recommended if you plan to run a few Sound locos together
It's a good plan and you wont' know yourself with the improvement from the select. More functions, better running, etc. The elink is also updatable from your laptop as new features, etc, are released.