20A is a good amount. I might pick some of those up
I don't really know what "safe" sub ohm you could hit with 20 amperes, I'm not a sub ohm kind of guy. I do highly recommend micro coils though. You can see a post I made on them
here with a picture for a guide line (3/32" diameter, that's a typo). If you need any help whatsoever just ask I'm happy to help you get your dripper going good!
Micro coils are: 1.) Safer than sub ohm, 2.) Produce hella clouds and
very good flavor. You needn't worry about having the best batteries, some decent high drain IMRs and you're good to go. I usually wrap mine so they come out to exactly 1.3Ω so I can run them on my APV. Working very very good. You can even build dual micros on your Trident clone.
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Vape well, vape often
