Yeah, that's what I thought. My mistake was not asking you everything I needed to know before making a recommendation. That changes things quite a bit, and in this case my answer will be much simpler. If you want to experiment with gaining muscle mass, you can try adding them. I'll answer your questions:
Cycle duration
Depending on your response and how effective it is, a cycle usually lasts at least 8–12 weeks.
Effectiveness
In studies, using peptides or growth hormone doesn't increase muscle mass in the way we usually understand it. There are human studies where lean body mass did increase, but strength didn't improve. This could indirectly suggest that the increase was due to water retention in the muscles. That's regarding your question about the research.
Dosages
If we're talking specifically about combining CJC-1295 with DAC and Ipamorelin, the most common ranges are:
- CJC-1295 with DAC: 1–2 mg per week (1–2 times per week).
- Ipamorelin: 200–300 mcg per injection (2–3 times per day).
Insulin syringes
It depends on how many ml of water you use and how many mg are in your vial. Let me know those two things and I'll calculate it exactly for you.
Expected results
What you can definitely expect is 1–2 kg of water retention, which could visually improve your appearance, considering how lean you already are. As for gaining muscle mass, in theory, combining them with testosterone could potentially have an effect, but I can't give you any specific numbers because it's quite individual. From my own experience, though, I can say that a cycle with elevated growth hormone levels is definitely more interesting.
Blood Tests
I think that with your level of subcutaneous fat, there shouldn't be any problems. But if you want to be on the safe side, you can check fasting glucose, insulin, triglycerides, and HbA1c. If you're prone to insulin resistance, it's better not to use growth hormone or its secretagogues.