The heat is coming. Split air with air cooled lights?

High!! Looking for knowledgeable CF and CFM experience(s). I have an Osburg 630 cfm 8" sucking through Hepa filter into an 8' x 7' footprint, 6' tall room. So about 336 cf. The basement room is air tight and air blows out all under house through an 8" vent opening and smell and heat is...