No Problem .. Adjust the length of the transverse cable to not interfere with the rack struts,
maybe buy another transverse cable if you have to make it much longer

either 2 strut mount, use the 2 bolts provided , or fit a center strut to the center hole in the seat stay brace.

Put the rack on there, adjust it to fit
then set the brakes up around it. just need the cable hanger to not hit the seatpost mounted housing stop before the braking stops the bike .

FWIW, there are racks like from Old Man Mountain company, that mount with the QR thru the hub, and struts that go on under the cantilever brake mounting bolts .