so i'm banned from r/ketamine otherwise id ask this there lol

okay, so my general plan is as follows:

1. Weigh out 300mg of ketamine powder
2. Mix it into a small beaker with 3ml of a bacteriostatic solution (deionized water, 0.9% benzyl alcohol)
3. Stir together until well dissolved
4. Heat up the beaker to 75 C to kill any bacteria on the ketamine powder
5. Draw the new ketamine solution into a syringe and attach a 0.22μm syringe filter
6. Dispense it into a 3ml sterile amber glass vial through the rubber stopper, repeat until vial is full
7. Draw 1ml of the solution up from vial and inject into left deltoid muscle with a 25 gauge 1cc 1" needle

but i have some questions

A. does this sound about right overall? B. is my needle the right size? i weigh about 134 lbs at 5'10.5 height, bmi 19 C. will the benzyl alcohol present a problem? i know benzyl alcohol reacts with hydrochloric acid, and as ketamine comes in hydrochloride form- will this cause an issue? or will it likely be fine?