Cointreau is less orangey than Citronge and less pricey if you can get it at TJ's. Triple Sec is not an option. Tartness is a problem with fresh lime/lemon juice. If you can get rangpur type limes the problem is solved. If your hosting, you may have to make them three different ways. Use a glass shaker instead of having a steel blade hack away at the molecular structure of what you are about to drink, Be kind. You know the components now do it your way. A perfect Margarita is not an end in itself but a tool toward having a perfect day.