The Edison can line track, so plan to have it following my 5 years olds own drawings. Not too expensive the Edison, much cheaper than lego’s MindStorm and probably does as much as that can.
With the lego it was strange to make the logs line up I had to sort of shift the studs from the actual Edison by using the LEGO Plate 1 x 2 with 1 Stud (with Bottom Groove) (3794) and other parts.
The ‘cockpit’ that houses Obi Wan still opens, just had to shrink the wings slightly, still looked good.
Used the parts from http://www.amazon.co.uk/LEGO-Star-Wars-75135-Interceptor/dp/B012NOD05C/ref=dp_ob_title_toy £19.99