Fuel Tech Billet 2 Rotor methanol tuning

I am helping a friend get his rotary dialed in. It is a billet 2 rotor with a pretty big HPT turbo on M1. The car previously ran mid 7s before he purchased it and has since had a turbo upgrade. I believe I have a general idea of the direction we need to go but I’m looking for some guidance on to what we have nailed down. We are looking to keep ignition etc as conservative as possible in the other hand we will run upwards of 70psi of boost and let the turbo do the work making the power.

Split angle: I was thinking of starting with 13-15* in vacuum and atmospheric pressure and taper it down to 9-10* by say 25 psi and let it ride there through the rest of the way as a safe starting point as I’m sure we could get a little more aggressive if we wanted.

Ignition Timing: I have it at roughly 23-25 at atmospheric and tapers to 13-14* at 70psi. I feel this is a bit aggressive but the engine would previously last a season before getting refreshed and the timing would be 25* from atmospheric to 20psi and would taper slowly down to 15* at 70psi which I thought was way to aggressive, but it lived good there apparently.

AFR: We have a target of roughly .75 lambda at atmospheric and taper it down to .54 by 35psi and let it go a little richer to .50ish by 70 psi. We haven’t ran it at this yet but this is where we planned to start on the dyno if the IGN coils could fire this rich of a lambda

Can post pics of the maps when I get to the laptop. Looking for any insight here as this is the first rotary on methanol and we are trying to tip toe lightly to start out.

I haven't built or tuned a drag rotary for 70 psi but I can say that I've tuned to ~50 psi on M1 and targeted 12* at peak boost. There's very little gained by timing with that much boost - same can be said about split which is sort of the inverse of what you're suggesting, I run 10 or less under vacuum and atmo increasing to ~15 degrees of split as a starting point.

I don't know what your RPM is going to be turning to but you'll find that you need to swap to a CDI on a rotary sooner that you'd expect if you're used to piston tuning. IGN1As are fantastic and can pack a punch but they're also relatively slow to saturate meaning that since they're being treated like a 2 stroke with no time to rest you'll going to be at max duty pretty quickly given how much dwell you have to feed in to light off 70 psi.