a few questions about mustang 07

Hi, im new in this forum, im from venezuela.. I have a mustang 07 automatic.. with 3.73 gears, K&N cold air intake and Predator

And i bought on steeda
-throttle spacer
-Charge motion plates
-Underdrive pulleys

And i have a few questions..

On the predator tune... i put the OEM to K&N... Do i have to change the OEM when i install the steeda parts?

Wich parameters in the tune do you recomend me to change?

And... Wich other part can i install to run better on the 1/4?

Sorry for my poor english

Wich parameters do you recomend me to change? (MAF curve, Spark timing, WOT fuel,...)

And I have a drag radials.. and semi slick and slick.. cause i have anothers cars fro drag racing... but im focused in the mustang right now