3ml aint small, in terms of tanks, haha. we were all stuck using much smaller tanks in the past!
I suggest either the goblin mini, subtank mini, the TFV4, the KayfunV4, or an Aqua! (oldies, but goodies)
Do some searching on ECF, you can find answers to your questions already written and posted, if you use the search.
GL and ENJOY your vape journey, young man. & remember, DONT fire an untested coil on a non-regulated mech!
have fun, treat others as you would like to be treated, and- have backups for your backups in terms of vape-gear!