heh, well your buddy is probably gonna want a sativa (sativas grow better in tropics). The sativa responds well to a fairly consistent daylight/nighttime temperatures and like the warmer more humid weather which is why their buds are rather airy/mold resistant.
Indicas in the tropics can be done, but are better off for colder drier outdoor climates or indoor growing. You just need an indica which is pest resistant, vigorous in warmer weather, and mold resistant, not to mention potent (very few)
So tell buddy to grow a sativa