what i would do is try a couple of runs with a 2$ fan, like a case fan, see if you do a GOOD job.
ergo no spills, drips etc and an even coat.
but in all honesty for the price they have, i would leave those fans alone. here in switzerland we get a fan for around 40fr. get 5 of those + 100fr of a cooler and your looking a pricey thing. (dollar to francs is almost 1 to 1).
but IF you know what your doing, go ahead! make a log and post it on this site, but if you're not called Tom and you don't do it often i would leave the modding alone
veni, vidi, left
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