I've got the calculations down pretty well, and because my doses (I dose 2x a week) are on the low side, between 3.4mg and 3.8mg, the units range from 17 to 19. I've emailed amopure and asked about 60mg vial size...Download pepcalc. Is so much easier. And you won't need to have such large amount shots.
Most vials are 3ml..so yes you should. But...I am not holding it to know. Lol