GW was specifically designed to treat cholesterol and has worked wonders for many... This is one of the reasons it is used with tren, to combat the side effects... https://www.sarmsx.com/30-Off/30-off-gw-501516
Fish oil is excellent at reducing triglycerides, 3000-4000 mg a day of omega-3 is considered the effective dose. 3-4 grams of EPA/DHA not just fish oil
Fish oil is a great supplement to use for general cardiovascular health, but don't expect anything drastic on your lipids. Gaw is what has shown to give a big impact in that area raising HDL and lowering LDL