Water/Methanol tune SHO

I just bought aem w/m kit and will install it in my SHO with catless downpipes and 3 bar map sensor. I am not sure about the way to tune the ignition spark. Can I depend on the iat correction table to add timing when the mixture is injected? Or zero out the iat table in the operating temps and add timing in boardline tables? I like the idea of add timing by the iat so it won?t add when kit failure or dry or turned off. Planing on going with 70/30 mixture and 17psi of boost

Anyone have an idea?

I would leave blk tables alone and let the knock sensors add timing on their own. it should see it can handle more timing on its own and add timing that way. that's how I did it on my boosted 5.0. the harder part will be tuning afr.