solarcrisis

I really appreciate the help. I live in the north east. out side temps can be 15-20 in the winter, basement can be around high 30's low 40's. Summer can be around 90's, basement can be 80's. The box is going to be insulated with foam board, gonna have orca grow film. The outside of the box is going to be painted with bedliner paint to prevent the wood from absorbing any moisture. As stated before going to have 4 400watt led (200watt actual draw each), going to have a CHE just incase for the winter. Im thinking of putting the CHE by the intake holes to warm up the air in the winter if need. Also a wall fan will be in placed. The inline fan will push the air through a DIY 5gal bucket scrubber located outside the box(the inline fan will be located inside box). I have everything worked out except for the Fan size and how big/many holes I need. would like to use a couple of elbows and few feet of duct work per intake hole to reach a radiator (mainly for winter).

Need a littler more info like average temps in winter and also summer temps in your basement ,