It won't be that thick if you use bacteriostatic water instead of ascorbic acid. As long as it's not full of fillers you shouldn't have any trouble drawing or injecting it.
I got some 1500 mg vials delivered yesterday in 10 mL size. The seller suggested adding 5-7.5 mL of BAC water. I want to do 500 mg every other day, which with 6 mL total would mean 2 mL per dose. I was hoping to stay under 1 mL but everything I saw said it gets too thick otherwise. Should I split it into two 1 mL shots? Could the powder be turned into something usable under the tongue instead?