OSF2004

Yes that will be fine.  DI's can either be switched to 12V or gnd.
If your AC switch outputs 12V when "on" then set the DI pull-up off and active level to high.  

Just wire the relay(s) low side to an Aux out as a "fuel pump" and it will automatically turn off the relay if engine RPM is 0.

You will need a non driven speed assigned but this can be the same input as the driven.

I assume it's still on stock dizzy? 
 
If so put ref timing to 16 degrees, try 119 in trigger offset and see if it'll start. 
When changing you need to make sure you press enter when doing changes otherwise it wont change. 
 
You'll also need a timing light to get the trigger offset perfect but it will start if you keep changing the numbers and its close. Keep trying and go up in 20s until its close then lower numbers each way. 
 
That's how I done it and then used timing light to get it perfect after it was close. 

Someone has done a typo by the looks, The last two characters should be b7, not 67.

Try just the last 6 numbers.

Yep that would be fine 

Correct, stock distributor is fine as a trigger for full sequential & COP.

You only need to connect to one of the cylinder 1 pins (A21 or A22).
If you are running 4 coils, each with a built in ignitor then I would expect your ignition setup to be something like this:

On the honda the spark edge is normally 'Rising', but if you have removed the factory ignitor and coil then I expect it to now be Falling.
If you can not get the engine to start then attach your base-map and a short PCLog of you trying to start the engine. 
Scott