It can be kind of expensive starting out, but you can definitely work through it. Having a combat class always helps, as running through Legacy Quest itself should leave you with around 2 million credits. Ships don't require rent or anything, but you do have to pay a small fee to repair if you get blown up.
If you don't wanna do that though, I suggest selling throwaway grinding resources. The server will just be starting out, and no one will be selling grinding packs yet, meaning metal, gemstone, water, and ore are going to sell like hotcakes at the beginning, not matter what the quality. Basically anything found in this video: https://www.youtube.com/watch?v=XvLbcBCjcro
I would stock up on and start selling right away, leaving enough for yourself to grind of course. When you get higher level, people will definitely be looking for houses and speederbikes so if you start cranking those out, you'll start making pretty good cash. And then guild halls and city halls will really make you bank. Regardless, you shouldn't be having to grind mission terminals at all on this version of the game.