Here is what you want to do. I assume you will be using a kit from A.
In order to increase the concentration, you need to withhold some oil. The magic solution quantity is essential for proper breakdown and it will only suspend so much tren. Trying to cram 8g of tren in 5ml magic solution is NOT going to work and you will end up with tren precipitating(ie falling out of suspension) and sitting in the crap you toss out leaving you with a solution of unknown concentration.
First off, a 2gf kit has 5ml magic solution, a 4gf has 10 and a 8gf has 20. The tren itself takes up 2ml per 2000mg.
Having those numbers down, we just need to do a littl math, so lets, for examples sake, say we have 4g of tren and a 4gf kit. that breaks down to this.
10ml magic
4ml of tren
now we do a littl math and divide 4000mg/150mg per ml = 26.66
26.66 is the magic number and that is how much final product we need to get a concentration of 150mg/ml. Now, we have 10ml magic + 4 ml of tren = 14ml of solution allready so to get to our mark of 26.66 we need to add 12.66ml of oil(10+4=14 - 26.66=12.66). So, when adding oil, draw out a couple ml to purge the filter and then add 10ml of oil to magic and dissolved pellets, purge with the 2 or so ml you pulled aside and you are done. If 26ml wont be enough final product, move up to an 8gf kit.
Any questions, feel free to e-mail me.