Yes to using fresh coils, no to the higher ohm coil but I do have a pack at home I can try it out. I have adjusted the wattage down until there is no longer a burnt taste but at 2.5 volts there is really not much of anything. I will do a separate PG and VG once I get home from work but will probably order new pg and vg from essentialdepot and new nicotine from carolinaxtract and see how those work together