A tweaked AFM. Take it somewhere that knows what they are doing, or give me a shout, I've been playing around with them recently and pretty sure I know exactly what BLiNK do and charge £100 for. 14 degrees isn't necessarily the best, it's just a safe 'average'.
Have a read of this: http://www.mx5nutz.com/forum/index.php?showtopic=112653
I would have a supercharger over a turbo if I had to go FI, but as said there is more knowledge around turbos...