ESR Capacitor ESR - Right selection
When Q1 turns on there will be a current surge as it discharges capacitors C1 and C1(?). This puts extra stress on the FET and may induce noise into nearby circuits. Using low ESR capacitors will only make it worse. 

The 0.1uF and 1uF capacitors you have chosen have a combined ESR of 10&#8486;||7.5&#8486; = 4.3&#8486;, so the peak discharge current will be about 12V/4.3&#8486; = 2.8A, which should be OK so long as the capacitors are placed close to the FET.  

I presume Q3 is low power FET, so its higher on-resistance should limit the surge current in C3.