If you have no cooling, your calendar is your cooling. DMR gives white button months as October to February in the plains in the manual and November to February in the seasonal folder, September to March in the mid hills and March to November in the high hills.
Before buying machinery, size it against the loads DMR publishes: heat from the bed, carbon dioxide from the bed, and 31 g of water leaving each square metre every hour. A unit that cannot remove that water cannot hold your humidity band.