If I’m good thus far, the last thing I need to know is, if this doesn’t work as advertised, who do I get PO’ed at?
Just yourself 'cos you will have done something wrong
Seriously though you seem to have the basics. Just one choice - do you go for the Bullet 2HP or newer M2HP (802.11n compliant) model.
It has been suggested that the M model is a tad slower with 802.11b & g connections which are still the most common in the Caribbean. I've found nothing to support this in practice, although there is the theory of greater backward compatibility overheads.
My thoughts on choosing the M model were compatibility with latest WiFi standard plus continued support I will enjoy for the newer device. Other than that the spec's are very similar. Don't look too hard for a 1000mm model though - they are shorter than that
You might have trouble finding a 1000mW model as well. The true spec is 28-29dBm = 600-800mW despite the fact that Ubiquiti round it up to 1000mW in their advertising (maybe on a good day)
Would also suggest you try something a little more practical than your 12 bell antenna - might be a tad on the large side - try 12dB (deciBell) gain one instead
Even then don't use it in on full power in the USA - its only certified by FCC for use with 6dB gain antenna
Maybe I shouldn't mention this but Ubiquity provide a neat little tick (untick?) box called "Obey regulatory rules" for those less concerned with RF pollution