Hey bro, naturally GH production happens with insulin is low, so with a GH releasing peptide, you would want to use it away from meal times. I have no actual proof of this. It's just what makes the most sense to me, so I would rather time it out that way. Call it bro science haha! As for GH, you are not relying on your body's natural production. You are directly injecting active hormone into your body, so it will work regardless of where your carbs and insulin levels are. Some guys take insulin and GH at the same time. I take them pretty close to one another pre workout, as well as in the AM. This is in my off season when I want to focus on muscle growth. During contest prep, I use my GH when insulin levels are lower, to help more with fat loss, so in the AM before fasted cardio, mid afternoon between meals and again preworkout.
As for preloading your pins, as long as you store them in the fridge, you're good. Just don't poke yourself in the finger trying to recap those things. Believe me. It hurts! lol