USD/MXN Short on simple technical resistance

Short USD/MXN at 18.835 with a price target of 18.20 and a stop at 19.10. There is significant daily resistance at the ~19.00 level. Price action on the daily chart is also starting to look toppy (doji on the 31st of August). If you follow my 10000 USD base account recommendations I advise a 10000 USD short position (stop at 19.10 / limit at 18.20). RR on this trade is ~2.5/1.