Hydraulic Handbrake with ABS

Have any of you guys tried what i plan to do and do yous know if it will work. I am looking to install a hydraulic handbrake but not disable the ABS. To do this i plan to install a hydraulic handbrake with its own master cylinder and brake fluid reservoir and install 2 addition brake calipers. Cant see why it wont work and i know people have done it to mx5s and other cars before but I’m not sure if i have all the details. I would also like to mention that this is NOT a drift car. It is used for mostly lanes rallies here in Ireland and both the ABS and the hydraulic handbrake are needed. 

Thanks

Liam