New to me!

Is there anything that I should be cautious of from a maintenance perspective? Adding these mods next spring:

Armytrix cerakoted Header Package with 200cell High Flow cats AWE Exhaust with Diamond Black dual tip package IPD 981 Aluminum Plenum which upgrades the factory 74mm throttle body with the larger 997 GT3 82mm throttle body
BMC Air Filters ECU Tune