It looks like L. zabucayo but I am not that familiar with other species in the genus so would not stake my life on it. Reportedly, scarification is helpful to improve germination / rate of germination but I think that danger of damaging the seed in the process probably offsets any advantages it would bring. I think with the ambient temp you'd have in Belize, just plant them & you should get good germination. Plant them anywhere from 1/2 covered to thinly covered by soil (if you look under a paradise nut tree, you'll see many "volunteers" sprouting with this sort of soil coverage). As Faldon mentioned, they seem to be slow growing (but perhaps they kick into gear once they reach a certain size?).
I have not seen the monkey pots used for candles before but they are great to mount orchids on. One guy here uses them frequently and everything he grows on them looks outstanding (although where he lives also contributes to a great degree). A couple years back, we awarded a CCE/AOS (highest cultural award from the American Orchid Society) for a Paraphalenopsis he was growing on one. So, there is another great use for the pods the nuts grow in.
John