This one is a decent shake & vape, but if you can let it steep for at least 5-7 days, it will be so much better.
I use 4% sweetener across the board in all of my juices. If 4% seems like too much, sweeten according to your personal preference.
In regards to the condensed milk.....there is no substitute. Although it's a background note in this recipe, it really ties it all together. If you omit this flavor, you'll find yourself thinking "That condensed milk really tied the juice together dude"