You are probably not around any longer, but found this recipe and wanted you to know I made this liquor every year for about 10 years...have not made it in about 15 years. The recipe I use is the strongest of Everclear, and it sets for about 14 days. The trick is getting the filtering process done fairly quickly. Fairly quickly is anywhere from 1 to 2 weeks. The BEST part of the recipe which you do not mention is the collateral benefit. The orange (rather than lemon) pieces may be picked out with a toothpick and served as tasty morsels in between sips of the liquor. ALSO, the paste produced as a result of the filtering process can be used to ice a chocolate cake or brownies. Be careful, the brandy (that is what I call it) will knock you on your butt if you "taste" too much of it at one time. It is potent.
I have experimented with addition of Vanilla Extract..really is good...and Almond Extract...so so. My batch planned for this coming Christmas will be made with the LEMONS!!