If you want to build a thrower, you need to use as small led die as possible, with as high die brightness / luminosity. The SST90 is likely not the best to use. Osram seem to make some, but I think other blf member know which led to use.
The SST90 is good instead for very big flood, and bright light because the led die is very large. If you want to drive at max power, a direct drive fet driver like some that texas ace make is good. For this driver, it look like a bucking driver but maximum 7A, which is not near what the sst90 can be running at (but still quite bright!)