effect of rearend gearing on ET's

Take to the track and run it. The dyno things are not going to be a real situation deal. Every car is different.

What's the 60'.... I bet it's over 2 seconds. Does the program provide that?

Running 114 you should be in the 11.60's

Don't kill it leaving the line. Try leaving at 1500-1800 and roll it out. The right way to do it is to slip the clutch until the wheel speed and engine speed match up. It's tough to get a handle on with a bad hooking car and hard on the clutch. The FAST guys have it down, BUT, they usually have some REALLY expensive clutch set ups.

Sounds like you're blowing the tires off it at the hit. I wouldn't bother swapping out gears until you get it to hook with your current set up. If it's mostly a drag, street/strip car, work on the front and rear suspension, weight bias, tire pressures and anything else you can think of to get it to hook.