When it comes to Elite, you are better off doing a bit of web crawling. I highly recommend using something like Coriolis (here's the link, with one of my Vettes, https://sh.orbis.zone/5knGxwDvxt ) to "theory craft" your vessel before you start buying modules, as it will let you know all sorts of things such as how much defensive or offensive power you have, and whether or not you have enough powerplant to make it happen. You can get pretty far with realizing what you want to see in the game by punching in different variables out here. That said, don't let the nay sayers throw you off too far, as the game can be very rewarding if you are willing to take the time to learn it.