Yes, you can use a Stop bath after the C41 developer.
I am using a water rinse after the C41 developer and after the Bleach but I am using the 250ml concentration +20ml extra water for the 270ml 2523 rotary Jobo development and re-use it only once. (2x2 135-36 or 2x2 120 roll films). Due to the fact I am printing on RA-4 I want to have a minimum of color shift in the same type CN films. In this way it's a good compromize in using the C41 chemicals.

Best regards,