I saw your post in the youtube thread about sensors, but it seems more applicable to this thread so I will comment here.
You asked about measuring airflow on this engine. You would really need some kind of MAF per cylinder to do that. I will see if I can find a small one that would fit, but it would take some custom work.
I suspect that you are going to have to run this in speed density mode though. Not knowing the cam specs will make tuning that harder, but it is doable.
Depending on the ECU you go with, you will probably need MAP (manifold air pressure) and IAT (intake air temperature) sensors.