At this point, assuming you can get it tuned, the cost of LTCC and using the latest LS PCM mod that a gentleman just came up with would be probably not too much more expensive. There's also the fact you'll then be running a much better computer system for future upgrades and it may even help you drop some time at the track and get some better fuel economy

(speculation of course)
Reliability is much better due to the fact that our Opti's hate liquids/moisture. Coils couldn't really give a crap (as long as the weather gaskets and plug wire boots are in good order) and won't corrode from sparking between rotor and cap posts.