Age? Stats? Tren for a second cycle i wouldnt recommend personally, i mean sure you can but ehh it will make it harder for your natural test production even harder to get back to the original output on a 15 week cycle of test and then adding a very powerful 19 nor. I would not advise it unless you are more developed than your average gym joe. If you’re looking into trt or possibly a competitor then yes you could try it at 150mg week that is a great starting dose and wont knock your socks off too bad. It’s easier to handle the side effects at a small dose of ace and still reap benefits.
Since its your second cycle id probably just wait and try your third cycle if you have plans on taking it to the next level. You could try NPP first and run it the back half of your long test cycle. The old school method is if your growing on test 500 then keep using test at 500. Ive never ran ace longer than 4 weeks. I get alot of side effects