What size Exo-terra did you get, and do you or your spouse feel comfortable wiring things? You can get get computer fans cheap and "rig" someway to hang them in there, you would need an AC/DC convertor for the fan. Thus the need to wire stuff up. I have 6 of those fans running off 1 AC/DC convertor and everything is working great.
Something to think about, do you want some sort of medium in the bottom of the tank, I'm using some bare bottom and some with the expanded clay pellets. The ones with the clay pellets maintain a much more stable humidity level than the others. I put down about 2 inches of the stuff then cut out a piece of the white lighting egg crate to use as my new bottom.
I'm not sure what the Exo-terra hoods look like but I know you can get the screw in daylight compact flourscent bulbs are lowes/home depot for $2-5 per bulb. Just make sure you get the correct wattage.
You can really go crazy with vivariums so be careful
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