So, I went to the store and bought 2 kilos of limes, the best juicer you can buy for 5 pesos, and a bottle of Hesperidina (since they had no triple sec and cointreau was $150.) Did a ratio of 2:1:1 (tequila, hesperidina, lime juice) and poured it in a cup with a bunch of ice. I also added a little bit of sugar to the lime juice. Not too bad for a first attempt.
Thanks for the advice...