What end mill and strategy for epoxy tooling board

Hi
Doing a job tomorrow in 50mm epoxy tooling board (700kg/m³). Cutting tool masters for vac forming of landscapes type forms. Not worked with epoxy and as it v-expensive stuff just want to make sure standard 6mm ball ends for both roughing and final pass will be ok . Could use a two flute uncut for roughing. Seems to be a suggestion of air to remove chips. At the moment I’ve set an intermediary speed of 30mm/s at 12,000rpm but can change. Any specialist info about working with epoxy tooling board.