Should be no problem. Just a general rule of thumb, start low. If you want more vapor, then work up. when you start getting dry hits, or if the vapor is a bit too much, then lower it down a bit.
That's the good thing about Ego type batteries... they're not too complex. I don't think I'd go lower than 1.5 ohms though. If the battery has a limit, the ego won't fire. If you find the battery is getting warm, then it's also an indication to lower it down a bit.
Also, for tanks, you might want to consider an Aspire Nautilus mini.. I've been hearing great things about those.