Integrating Brickwood Box Into Paver Patio

I’d like to integrate the Brickwood Box into a paver patio that I will be installing. I intend to follow the Box plans to the letter, including with regard to the frost line. Once the Box is completed, can I place pavers over all of the gravel that is surrounding the base of the Box in order to fully integrate the Box into a paver patio that I’d like to then build around the Box? If so, how do I ensure that the top of the pavers adjacent to the Box end up at grade level with the pavers of the rest of the patio? Can I do that in part by removing some gravel underneath the pavers that I use adjacent to the Box, or do I need to make adjustments to the dimensions of the Box base and/or how deep I dig out the ground location for the Box?