Had a job like that about two years ago.
Ran power/data to Carlon floor boxes. EMT for power and EMT for data, with dividers in boxes. Had to 'blank' a few and Sealtite to the cubes in a few spots, due to floor plan changes.
EMT ran from power panel, EMT ran from data closet; accessed floor cavity via cutting & patching floor.
Also, you may think about a 'poke-thru' type item, like Wiremolds. (power/data combo, or power/data only.