Nitrous set up and prep

I’m getting ready to set up my plate nitrous system 50/100/150 hp
Here’s the plan:

1 correct bottle angle
2 non projected spark plugs a heat range colder than stock file rough edges smooth
3 carefully check timing
4 retard timing 2 degrees for every 50 hp of gas
5. Make a 1/4 mile pass stop immediately
To read plugs
6 make adjustments according to how the plugs read more or less nitrous/fuel
7. Install nitrous cutoff if fuel pressure drop
8 installed air/fuel ratio gauges tune to between 12.8 to 13.2 to 1 at WOT
10 install wide open throttle switch for nitrous activation

Am I forgetting anything???