Not sure why you are doing HCG with test and tren? HCg works best with a low calorie diet which would defeat the purpose of the test and tren, so that should answer the question on when to run it. Also, seems like you have not done a lot of research since you are asking questions you should prior to purchasing.
With that said here is some info, but you really need to do more research:a 29 gauge pin by 1/2 into fatty deposit areas like the mid section and quanities can vary.
why the tren 4-12?, thats a long time to run a ph or ps, it will have some effect on your liver going that long. I would suggest you run it for about 3 weeks at the begining to jump start while you wait for the test to kick in.
Anyway, good luck to you