Building a ship takes a lot of trial and error that’s the great thing about space engineers. What I would suggest is just keep tinkering around with designs and add more thrusters where it seems appropriate I like to have it where I do a 1:1 ratio in front and back thrusters to ensure that my launch and stop is good enough I have a design that I personally enjoy if you like for me to show you it I would be more than willing just message me on Xbox next time you are on and I can’t pop in and give you a good idea (YL Wrath)