Mate, i wouldn't run EDIS. More to go wrong, no spark rev cut etc.

Buy one of these: http://cgi.ebay.co.uk/4-x-Coil-Drive...3A1%7C294%3A50

It's a fully current limited 4x coil driver (you only need 2, but this can run COP if you want in the future) in a nice waterproof box. Very easy to wire, just needs a couple of wires soldering inside the ECU.

Rick.