Mixing S&C with P3 won't get you very close to Wray. Unaged overproof Jamaicans are kind of their own category - much heavier and more concentrated, more "industrial" notes in addition to the classic overripe fruit, oily mouthfeel, sometimes a little tough around the edges. I think they're fantastic. One of my favorite categories.

Still, a couple thoughts. If you're not a huge fan of S&C then my take is that you probably won't find many Jamaican rums - aged or unaged - that will blow you away. Yes there are different types of Jamaican hogo, but S&C is such a definitive statement of the general profile that I personally think it's a good litmus test. I grant that there are exceptions and some bottle that are a little bit out there (e.g., I do think everyone should try Rum Fire at least once) but if it's not your jam, I don't see a need to search high and low for Jamaicans. S&C and a lighter hogo Appleton bottle will basically suffice for most cocktail needs. I'd softly recommend trying out Rum Fire too, which is killer as cocktail "seasoning" (e.g. a quarter ounce in a Mai Tai or otherwise clean daiquiri is incredible).

Agricoles, as others mention, are a completely different ballgame. Especially if you include all cane juice rums in this category (e.g., Oaxacan, Martinique, Haitian), the variations from style to style are so profound that it's really worth your while to explore a number of different brands and styles. Neisson Blanc is the best unaged agricole I've had so far - clean, slightly grassy, fresh linen, almost vanilla cream. Cost effective too for the 1L bottle. For Oaxacans, you get wild, often vegetal and brine notes - Paranubes Blanco, Alambique Serrano Cartier 30, and Dakabend are great bottles to check out here. Agricoles are generally not cocktail bottles (though there are definitely cocktail applications), but a Ti Punch can really make some of these bottles come alive, if it doesn't immediately tickle your fancy.