So I called and caught them before anything had shipped and cancelled the Brio. Was able to change it to an open box Rega Aria phono stage that they had.Good for you. I am glad you were able to cancel the order on the Brio and swing a deal on a standalone phono stage.
I am sure the Aria will be just fine with your Rega Exact MM cartridge and you successfully kept your wish of keeping Rega with Rega. Just follow the instructions and configure your phono stage accordingly for a MM cartridge as the Aria has MC capabilities too if you ever go down this road in the future.
Enjoy the new toys!