hey there
First, you need to figure out what your cjc1295 is. True cjc1295 attaches the length 29 peptide to a protein called "drug affinity complex" (DAC) which greatly extends the half-life to several days. Most cjc1295 sold lacks DAC and is just the peptide (sometimes called mod grf1-29). So the big question is whether you have true cjc or mod grf1-29. The dosing depends on that.
By way of background, these peptides mimic GHRH, growth hormone releasing hormone. I believe sermorelin is just the first 29 amino acids of GHRH. It too helps release GH from the pituitary, but has a short half-life measured in minutes. Chemists then created a tweaked version with 4 amino acid substitutions - and a half-life 5-10x longer. This is mod grf, and most people favor it with ghrp6. You take 100-150 mcg. of each, 2-3x per day. Ingest no fats at time of shot.
Cjc1295 w DAC has a half-life measured in days. Read Dat on dosing. I don't remember offhand.
The argument is that mod grf replicates pulsate release of gh (said to be typical for men), while cjc1295 w DAC produces a slower bleed of gh, a more feminine pattern. Don't know if this is a legit argument or more "bro science". I use ghrp6 + mod grf, sometimes mixing in ipamorelin for ghrp6 or sermorelin for mod grf.
Stacking ... most things synergize. A good place to start is always test-e 300-600mg/week ... but you can go higher or in different directions.