That makes sense. You launched at 5000 rpm, not sure why people are saying you need more than that. What you need is a 2-step, is that not easily done with your flash (it is, not a question I guess, why aren’t you using it?).
And that makes sense, what the nitrous is for, and why you aren’t using it yet…sounds neat (so what is it, progressive from 3000-5500?).
Really what you need is the 2 step to drop your 60’ to something reasonable. Should put you low-11s. Then you need to figure out an antilag program or no-lift shift since you are falling so badly out of spool. Or run that bottle…>8^)