You really aren't that far under, normal development times may work fine combined with shorter times at the enlarger.

A typical push on C-41 is 30 seconds extra per stop (or 10 seconds per 1/3 stop).

160 to 400 is 1-1/3-stops so plus 40

From 125 it's another 1/3 so plus 50 total

If this is a truly important roll try shooting another roll shot at 400, cut it in thirds and process it at normal time and two different push times to see what works for you.