Need some input on the VTX10R w/17.5

Looking for some more power, and wondering what I can do next.

Blinky mode
45° timing on VST motor, stock 12.5mm rotor
Throttle PWM 16000
Trottle Curve +EXP5
100% punch

Car is Durango 210 running 35/75. This is the biggest I can fit with the 75. Motor/Spur cover doesn't fit with this setup.

Battery is Protek 60C 2S 3800mah.

Mainly looking for more low-end punch to get over some big double double jumps at my local track (Mikes Hobby Shop, Carrollton, Tx).

Would the 12.8mm Torque suit me better or the 12.0mm RPM rotor?
Is there any other ESC settings I can change while still staying Blinky?
Would changing from 45° to 15° motor timing be better?