Dear community, what is the maximum printing size I can export from Miro board?

I want to create a  PDF document which is of at least 150 dpi (ideally 225 or 300) and of A1 (59.4 x 84.1 cm) and A2 format (42 x 59.4 cm). The board exported would contain text boxes, few photographs, few post-its. What would be technically-wise the most effective way to get there?

Which plan could I use for such case?

Thank you so much for your thoughts!