I would go with 5mg on GW. This is where I just started my mouse. I can't give any info based off experience because he just started
With ostarine, igf, gh peptides, and GW you are looking at lean mass gains.
Ostarine would be the closest of the bunch to something like testosterone. Obviously they are not the same but ostarine will attach to and activate the same receptor. In clinical trials it's repeatedly shown to produce lean mass gains as well as other benefits without the harsh side effects. I have about a week and a half on ostarine and so far it's been good. GW apparently can help metabolism and reduce bf, help With lipids, and help with endurance from what I've read.
Igf is a growth factor. When gh passes thru the liver, igf is released. This is responsible for creating new muscle cells and important to gaining muscle. But igf seems to help stay lean while consuming high calories as well.
Ostarine and GW would be a good alternative to AAS and help cut bf while maintaining or increasing muscle mass. Look more into diet in terms of bulking and cutting and use these as supplements to help achieve those goals.
If you look around the net or google there are quite a few logs for ostarine, igf, gh peptides. Those may help you gain a better understanding and may give you an idea of what to expect. Before I had the opportunity to use it, I would recommend ostarine to some of the younger guys and people who weren't quite ready for AAS and the response was always good. I researched it for a long time and the response has always been strength and mass gains without nasty side effects and hpta suppression.