I'd say that was perfect... I would suggest this: If you're using a bottle of everclear then with a 50/50 water/sugar mix that's a Lot of Limoncello... SO...

As long as you're doing it make it two batches... one soaking for two weeks, (because waiting is hell), and the other 2 months or longer.

Limoncello is a very sweet drink... it ain't beer... you won't be drinking a lot of it at any one time... or at least you shouldn't be.