Whoa! Nice project! I too went down this path but stopped for various reasons.
I also had that exact Triumph. Bike was a turd, so you're finally using the ITB's for a good purpose! HAHA
One caution, I'd ditch that AEM dizzy adapter, it is not accurate enough in my opinion for what you're doing.
If it were fuel only, I'd say it'd be ok, but if full ignition control, I'd be hesitant using that.
Think gear lash and what that equates to in degrees!!!
Go with a crank trigger from GoingSuperFast.