The Smok AL85 should be fine. The reason adjustable mods are so popular, is because they are adjustable. If you want less vapor, lower the wattage. If you want more, you can raise it. If you want to know the limits of the battery, you can go to
ohms law calculator and punch in the ohms of the coil, and the amps of the battery, and it will give you the maximum wattage and at what volts that will be at. I did that for the .6 ohm coil, and your 15 amp limit from the battery, and it came out to 135 watts.. which is well above the maximum the mod can produce.. so you should be fine.
For the most part, you should be fine in most cases. with a 60w ,mod, don't go below .267 ohm coil. with an 80w, don't go below .355 ohms... if you do that, you will never run into an issue with your batteries.
I vape my .8 ohm coil at 30 watts. I use 6.5 amps, and I'm quite fine with those settings.