Hmmm, I dont feel comfortable giving you driving advice because I am working on that myself but I would say ditch the 19" wheels. Unless theyre lightweight that is. Go with some lightweight 18s.
It dyno'd at 388whp. Almost positive I am not any where near that amount of power in this video. I dont know what a spanking is to you but I consider multiple car lengths to be a pretty decent win. I only lost to the Camaro that had 100 more HP than I did.
I got my niece that same car seat, supposedly one of the safest out there and of course the best looking.