As long as you're willing to give it a bit of trial and error time, I'm sure you can find a setup that works for you. You don't necessarily need a high nic level. A lot of us now, even new vapers use 3, 6, and 12 mg. With the more efficient tech of today, you won't necessarily need to be cranking out a 24 mg juice. So you can always try a lower mg juice. If it works it works.
Also, throat hit is more than nicotine. Yes, the nicotine plays a big role, but that's not all there is to it. As someone who absolutely adores a good, strong, throat hit I've had to learn this because not all juices of the same mg hit the same!
If you're trying to mellow that throat hit, I'd go for a high VG juice, as opposed to PG. PG carries the throat hit effect of the nicotine in a much stronger way than VG.
Also, I have no idea why this is, but some flavors mute the throat hit quite strongly. I've found that anything creamy, or what one might consider a mild fruit favor (like melon), mutes throat hit. And for some reason apple. Apple flavors mean no throat hit for me.
Just work on finding a high VG juice, with a flavoring that doesn't carry a lot of throat hit. Maybe start yourself at a 6 mg juice, maybe a dessert or melon flavor? And see how it feels?
If all else fails you could just try not inhaling. The mouth is a sensitive mucous membrane, and there's no reason to believe you won't absorb at least some nicotine just from your mouth.