2007 chev trailblazer

2007 chev trailblazer, senior owner. Just had completed full service for grandkids but not sporty enough. 4x4 with 314000 on it. Over 1200 in parts in the last month, runs well.
Replaced or serviced the following;
Installed and balanced tires
New brakes, rotors and pads
Front hubs and wheel bearings
Plugs and coils, all 6
Serpentine belt and both idler pulleys
Map and maf sensors
Thermostat and housing
Battery