Novolog Pen Refills, Other Questions

I’d like to try insulin four times per week, pre workout. I want to get a massive pump. I realize insulin can be very dangerous and overuse can permanently mess up my pancreas. The only novolog I can find is novolog pen refills. Can I open the refills like an ampule and transfer the insulin to a sterile vial? Theyre 100iu per mL? So if i want to do 5iu, I’d have to inject .05mL? What about just using OTC lantus insulin?

What’s the general opinion of insulin here? How should I dose it, I figure I’ll do like 1/3rd the dose prewokout with sugar, and the rest PWO with carbs.