2014 E-series 4.6L Tuning

Trying to get an idea of what tuning parameters are available for these. Thew few samples I found searching the forums seemed very basic/limited, but the newest one i could find was a 09' and alot could change by 2014. If anyone has more recent ones to share that would be great so I can decide if HPTuners is the best method or to try something different..

I'm mainly looking to:
Disable 75mph Speed Limiter
Tweak Transmission to be less reluctant to downshift, and more willing to hold revs longer under moderate load
Fix DBW so its 1:1 with the Pedal Position (currently 100% Pedal = 40-70 MAX% Throttle depending on load, and RPM)

Eventually I want to ditch the 4 Speed Slushbox for a manual but I'm not sure if this software will allow that to happen or not.... I've read some interesting methods on here of people manual swapping Crown Vics with the help of this software but i understand the ECU's could be entirely different..