Not quite at Harvard, the regression coefficients showed about half the boost for Hispanic as for just legacy. But still a sizable bump, with the caveats that each applicant is an individual and that there is no generalized bump that is uniformly applied to any particular hooked candidate, etc.
To put it a bit in context, my informed guess is that OP would fall somewhere in the 8th or 9th decile of the Harvard applicant pool with regard to academics. Hispanics in these deciles are admitted at a rate of about 25%, while Asians would be looking more at approximately 6% (whites around 9%). Legacies (all races combined) in these deciles are around 50% acceptance. These data are getting a little old now, but the pool of talent really hasn’t changed very much at the upper levels, I’d guess those acceptance rates are still ballpark today.