with the 510-T, personally i wouldnt go anywhere near 3.0ohms. thatll be too weak of vapor. youd most likely want somehting closer to 2ohm, maybe a 1.5 or 1.7, but not higher than 2 imo. personally id go on the lower side of the spectrum, seeing how the 510-T is a 3.7v device. it doesnt say on the innokin website if its regulated or not (i didnt spend much time looking however). either way, personally if i were going with a tank on it, id go with something no higher than 2 bc tanks tend to need a tad bit more power than a regular atty or carto. if it were a regular atty or carto, 2.0. or 2.2ohm would even be fine.
ive never used their tank atty feeder system so i cant comment on that but if the resistance is not too high, it ought to be fine. hope that helps.
also keep in mind that youll experience lower batttery life using LR stuff. if your device does indeed fire LR stuff, which i hope it does.