I would think you'd be best off to start with a standard resistance atty. It really depends on several other factors.
The point of a low resistance atty is to bump up the wattage through the coil when you don't have the ability to increase the voltage. With variable volt, you can increase the wattage with the voltage (confused yet?), so you don't need lower resistance.
Of course, I may be oversimplifying it, but that's the way I'd go. I use a Provari, and I order whatever resistance attys I can get cheapest, and adjust the voltage accordingly... In other words, I buy what's on sale, and go from there.
To really start to understand how voltage impacts your vape, though, you may be best to use whatever atty you're already accustomed to using. Then you can see the impact and know it's from the VV, not from using a different atty.
Just my thoughts... Someone who knows more will have more info, but I hate to see a question go unanswered!