I need help with these mods and what ones would would do and choose. I have the 300 S 5.7

Hemifever tune
Stant super stat thermostat
pedal box or sprint booster
Z Automotuve tazer
CAI - was hoping some can help me with this
Exhaust - I am looking at these but is there any more you would recommend - corsa extreme cat-back exhaust part number #14439,Flowmaster super 40's or 44s American Thunder cat-back (do I delete the resonator) or what can I use for after market resonators

Thanks for the help