Here's what I ended up with. I put two 2 inch passive intakes on opposite ends of the bottom of the box. I put a 7 inch turbo power oscillating fan on the bottom of the box blowing directly at the lights. I cut a hole in the top and put a high rpm 6 inch oscillating fan blowing out.

I just bought a digital thermometer with a remote sensor and put the sensor at plant top level.

It now reads 77 degrees with all lights on. It almost seems impossible that the temp dropped that much and I almost think the thermometer might be wrong. Thanks for the help everyone!