Everyone plays tournaments a little different, it’s up to you in the long run to figure out what you like and what works for you. I myself and other forum members can really only tell you what we like and what we think about your lineup. That doesn’t mean we are correct or wrong about any of it, again there are different viable strategies.
My personal preference when my lineup wasn’t as good as it is now was something like this.
If I could help it, I wanted my lead off dino to have at least 1600 health, 1700 even better, and the higher from there better still. You can certainly get wins with less, but in my experience having 1600 or more gives you a much better chance of not getting 1hk or 2hk right off the bat.
The only other criteria I really liked to meet was I preferred my 2nd and 3 dino’s to have over 500 attack, and again the more over that the better. Having over 500 atk gives you a good chance to 3 or 4hk most opponents you may come across.
Again, those were just some of my preferences and doesn’t mean you can’t with with less but aiming for several teams that can meet those criteria wouldn’t be a bad start towards a team that can get consistent wins.