Pretty much what I do. You'll have to play with the rpm to see what gives you the best numbers. I bring the rpm up to about 1800 when going into the stage beam. If I don't then when I floor it from idle the car will jump before it hits the two step.
Put a toggle switch to power the line lock system on and offer to avoid accidentally engaging itIt locks the breaks off, ( it's just a stop in fluid flow, it don't care if it locks the breaks closed or open..) it should not be a problem unless I act stupid and engage the 2 step at a light....
I have two line locks, one for front and one rear. I use the front for burnouts, and both when staged. The two line locks are connected to a button which also activates the two step. There's a total of 3 switches to separate the front line lock and both line locks with the two step.
Ahh thats not much. wouldn't even need a high amp toggle sw.I believe I hard wired mine. <4 amps per solenoid.