I think you can just use the standard Hexa frame type and settings, and your ATC_ACCEL_P_MAX and ATC_ACCEL_R_MAX will be different.
These PIDs will also be different Roll and Pitch, not locked like for a symmetrical craft.
ATC_RAT_RLL_P
ATC_RAT_RLL_I
ATC_RAT_RLL_D
ATC_RAT_PIT_P
ATC_RAT_PIT_I
ATC_RAT_PIT_D
Follow the tuning guides and Autotune should be able to sort it out.
You say H frame but the pics are X frame - just be aware the motor rotations are different between X and H and the flight characteristics can be different (possibly bad) if you apply the wrong type (X or H) to the physical frame - like applying H frame type when the actual physical frame is an X.