I like to see good, effective communication. It's a thing of beauty!
I would just reinforce the point that fluxing IS for cleaning your melt. And, if you do decide to flux with paraffin or candles, or beeswax or whatever, it WILL smoke like the gates of Hades. And if you don't light it off yourself, it might light off on its own when you least expect it. Marvellux does not have this annoyance to contend with, and I have noticed that it makes the lead very, very pourable so it will fill out the mold fully. I can't recommend it highly enough!